This lesson covers key concepts in statistics and linear equations,... Show more
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
323
•
1 Jul 2025
•
Learn How to Calculate Mean, Median, Mode, and Range Easily
Chetana Patel
@chetanapatel_kiqy
Averages from Frequency Tables
This page focuses on calculating averages from frequency tables, which is a crucial skill for interpreting frequency tables for averages.
The main example presented is a frequency table showing the number of pints of milk used by 40 families in a week. The table includes columns for pints and their corresponding frequencies.
Example: To calculate the mean from a frequency table:
- Multiply each value by its frequency
- Sum these products
- Divide by the total frequency
In this case, the mean is calculated as 140 ÷ 40 = 3.5 pints.
Highlight: The mode can be easily identified from a frequency table as the value with the highest frequency. In this example, the mode is 3 pints.
The page also includes questions about finding the mode and the total number of pints used, reinforcing the understanding of frequency table interpretation.
Scatter Graphs and Correlation
This page introduces scatter graphs and the concept of correlation, which are important for visualizing relationships between two variables.
The scatter graph presented shows the relationship between students' math and science marks. Each point on the graph represents a student's performance in both subjects.
Vocabulary: An anomaly or outlier is a data point that doesn't fit the general trend of the data.
Highlight: The graph shows a positive correlation between math and science marks, meaning that generally, students who perform well in math also tend to perform well in science.
The page includes a table of data points used to create the scatter graph, allowing students to see how raw data is translated into a visual representation.
Understanding scatter graphs and correlation is crucial for interpreting trends and relationships in various fields, from academic performance to scientific research.
Linear Equations: y=mx+c
This page introduces the fundamental equation for linear functions: y=mx+c. This equation is crucial for understanding and graphing straight lines.
Definition: In the equation y=mx+c:
- y is the dependent variable
- x is the independent variable
- m is the gradient of the line
- c is the y-intercept
The page includes a graph illustrating the components of a linear equation, helping students visualize the relationship between the equation and its graphical representation.
Example: For the equation 2 = 3x + 4:
- The gradient is 3
- The y-intercept is 4
Highlight: When plotting linear equations, remember that the gradient determines the steepness and direction of the line, while the y-intercept determines where the line crosses the y-axis.
The page concludes with an exercise asking students to identify the y-intercept and gradient of a given line, reinforcing the practical application of the y=mx+c equation.
Mean, Median, Mode, and Range
This page introduces the fundamental concepts of how to calculate mean, median, mode, and range. These measures of central tendency and spread are essential for understanding and summarizing datasets.
The mean is calculated by adding all numbers and dividing by the count of numbers. For example, the mean of 1, 0, 2, and 3 is ÷ 4 = 1.5.
Definition: The median is the middle value when numbers are ordered.
Example: For the set 5, 4, 3, 2, 1, the median would be 3.
The mode is the most frequently occurring number in a dataset.
Example: In the set 2, 2, 2, 3, 3, 4, 5, 5, 5, 6, the mode would be both 2 and 5.
The range is calculated by subtracting the smallest number from the largest number in a dataset.
Highlight: When given the mean and asked to find a missing number, use the formula: - sum of known numbers = missing number.
The page also includes an example of finding a possible set of 6 numbers given specific conditions about their median, range, and mode.
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Learn How to Calculate Mean, Median, Mode, and Range Easily
Chetana Patel
@chetanapatel_kiqy
This lesson covers key concepts in statistics and linear equations, focusing on measures of central tendency, data interpretation, and graphing linear functions. Students learn how to calculate and interpret mean, median, mode, and range, as well as how to work... Show more
Averages from Frequency Tables
This page focuses on calculating averages from frequency tables, which is a crucial skill for interpreting frequency tables for averages.
The main example presented is a frequency table showing the number of pints of milk used by 40 families in a week. The table includes columns for pints and their corresponding frequencies.
Example: To calculate the mean from a frequency table:
- Multiply each value by its frequency
- Sum these products
- Divide by the total frequency
In this case, the mean is calculated as 140 ÷ 40 = 3.5 pints.
Highlight: The mode can be easily identified from a frequency table as the value with the highest frequency. In this example, the mode is 3 pints.
The page also includes questions about finding the mode and the total number of pints used, reinforcing the understanding of frequency table interpretation.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Scatter Graphs and Correlation
This page introduces scatter graphs and the concept of correlation, which are important for visualizing relationships between two variables.
The scatter graph presented shows the relationship between students' math and science marks. Each point on the graph represents a student's performance in both subjects.
Vocabulary: An anomaly or outlier is a data point that doesn't fit the general trend of the data.
Highlight: The graph shows a positive correlation between math and science marks, meaning that generally, students who perform well in math also tend to perform well in science.
The page includes a table of data points used to create the scatter graph, allowing students to see how raw data is translated into a visual representation.
Understanding scatter graphs and correlation is crucial for interpreting trends and relationships in various fields, from academic performance to scientific research.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Linear Equations: y=mx+c
This page introduces the fundamental equation for linear functions: y=mx+c. This equation is crucial for understanding and graphing straight lines.
Definition: In the equation y=mx+c:
- y is the dependent variable
- x is the independent variable
- m is the gradient of the line
- c is the y-intercept
The page includes a graph illustrating the components of a linear equation, helping students visualize the relationship between the equation and its graphical representation.
Example: For the equation 2 = 3x + 4:
- The gradient is 3
- The y-intercept is 4
Highlight: When plotting linear equations, remember that the gradient determines the steepness and direction of the line, while the y-intercept determines where the line crosses the y-axis.
The page concludes with an exercise asking students to identify the y-intercept and gradient of a given line, reinforcing the practical application of the y=mx+c equation.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Mean, Median, Mode, and Range
This page introduces the fundamental concepts of how to calculate mean, median, mode, and range. These measures of central tendency and spread are essential for understanding and summarizing datasets.
The mean is calculated by adding all numbers and dividing by the count of numbers. For example, the mean of 1, 0, 2, and 3 is ÷ 4 = 1.5.
Definition: The median is the middle value when numbers are ordered.
Example: For the set 5, 4, 3, 2, 1, the median would be 3.
The mode is the most frequently occurring number in a dataset.
Example: In the set 2, 2, 2, 3, 3, 4, 5, 5, 5, 6, the mode would be both 2 and 5.
The range is calculated by subtracting the smallest number from the largest number in a dataset.
Highlight: When given the mean and asked to find a missing number, use the formula: - sum of known numbers = missing number.
The page also includes an example of finding a possible set of 6 numbers given specific conditions about their median, range, and mode.
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user