Question

52, 6, 37, 5, 57, 19, 43, 40, 21, 40, 42, 51, 30, 20, 2, 38, 55, 23, 23, 55, 32, 30
*click the tally box to count up. the mints counts down.
interval tally frequency
0 - 9 o
10 - 19 3
20 - 29
30 - 39
40 - 49
50 - 59

Explanation:

Step1: Count numbers in 20 - 29

21, 23, 23, 20 are in the 20 - 29 interval. So there are 4 numbers.

Step2: Count numbers in 30 - 39

37, 30, 38, 32, 30 are in the 30 - 39 interval. So there are 5 numbers.

Step3: Count numbers in 40 - 49

40, 43, 40, 42 are in the 40 - 49 interval. So there are 4 numbers.

Step4: Count numbers in 50 - 59

52, 57, 51, 55, 55 are in the 50 - 59 interval. So there are 5 numbers.

Answer:

Interval	Tally	Frequency
10 - 19		3
20 - 29		4
30 - 39		5
40 - 49		4
50 - 59		5