The scores of 35 children in a test are given below:
Make a frequency table and answer these questions:
How many children got scores between 10 and 20?
To find: Number of children who got scores between 10 and 20.
Look at the table for numbers between 10 and 20 in the first column. We have 11, 12, 13, 14, 15, 16, 17, 18 and 19.
Note down frequencies of each value from the second column.
Frequency of 11 = 3
Frequency of 12 = 3
Frequency of 13 = 4
Frequency of 14 = 4
Frequency of 15 = 6
Frequency of 16 = 5
Frequency of 17 = 4
Frequency of 18 = 2
Frequency of 19 = 1
Add up the numbers, 3 + 3 + 4 + 4 + 6 + 5 + 4 + 2 + 1 = 32
⇒ There are 32 children who got score between 10 and 20.
Thus, answer is 32.
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