Grade 4 · Math · Unit 10 of 16
Data & Averages
Mean, median, mode and plots
What your child practises
Telling words-data from number-data, finding the mean, median and mode, and reading stem-and-leaf plots and tables that compare two groups.
Ontario Curriculum expectation: D1.1–D1.6 · qualitative and quantitative data, mean, median and mode, stem-and-leaf plots and multiple-bar graphs
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
What is the mean of these numbers?
9, 8, 11, 20
- 10
- 7
- 12
Show answer
12
Hint: Add the numbers, then divide by how many there are.
Question 2
Is this qualitative or quantitative data? the minutes you spend reading
- qualitative
- quantitative
Show answer
quantitative
Hint: Qualitative data describes with words. Quantitative data counts or measures with numbers.
Question 3
How many books did Class B read in Mar?
Books read Month Class A Class B Jan 15 13 Feb 13 10 Mar 12 5 - 11
- 15
- 5
Show answer
5
Hint: Find the month, then the column for Class B.
Question 4
What is the median of these numbers?
31, 7, 27, 35, 30
- 35
- 7
- 30
Show answer
30
Hint: Put the numbers in order. The median is the one in the middle.
Question 5
Is this qualitative or quantitative data? your eye colour
- quantitative
- qualitative
Show answer
qualitative
Hint: Qualitative data describes with words. Quantitative data counts or measures with numbers.
Question 6
How many numbers are in this plot?
Stem-and-leaf plot (stem | leaves) Stem Leaves 1 0 2 7 8 2 2 5 8 3 2 7 - 12
- 4
- 9
Show answer
9
Hint: Each leaf is one number. Count all the leaves.