📊 Mean, Mode, Median and Range

Learn how to calculate and use the four key measures of average and spread in data sets. **What you'll learn:** - Identify and calculate the mean (average) of a set of numbers - Find the mode (most frequently occurring value) in a data set - Determine the median (middle value) when data is ordered - Calculate the range (difference between highest and lowest values)

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Questions in this quiz

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Question 1
What is the mean of these numbers: $2, 4, 6, 8$ ?
Question 2
Which number is the mode in this list: $3, 5, 5, 7, 9$ ?
Question 3
The median is always the same as the mean.
Question 4
The range of the numbers $10, 15, 22, 8$ is ___.
Question 5
What is the median of: $4, 2, 8, 6, 1$ ?
Question 6
A data set has no mode. Which of these could be the data set?
Question 7
The heights (in cm) of five children are: $120, 125, 130, 128, 127$ . What is the mean height?
Question 8
The mode of $7, 9, 7, 5, 9, 7, 3$ is ___ and the range is ___.
Question 9
A teacher records test scores: $15, 18, 20, 17, 19, 20, 16$ . What is the median score?
Question 10
Two data sets both have a mean of $10$ and a range of $8$ . What can you conclude?