Question

for the following distribution
fill in the frequency distribution
class
0 - 9.9
10 - 19.9
20 - 29.9
30 - 39.9
40 - 49.9
frequency
4
2
8
10
8
now sketch the histogram for this frequency distribution

Explanation:

Step1: Count data in 0 - 9.9

Count values between 0 and 9.9 in the data - set. The values 1.2, 1.6, 5.8, 6.1 fall in this range. So the frequency is 4.

Step2: Count data in 10 - 19.9

Count values between 10 and 19.9. The values 12.5, 13.4, 18.7 fall in this range. So the frequency is 3.

Step3: Count data in 20 - 29.9

Count values between 20 and 29.9. The values 21, 21.7, 22, 22.7, 23.6, 24.1, 25.3, 26.1, 26.7, 26.9 fall in this range. So the frequency is 10.

Step4: Count data in 30 - 39.9

Count values between 30 and 39.9. The values 30.2, 30.8, 31.6, 33.2, 34.7, 34.8, 34.9, 37, 37.3, 38.2, 39.2 fall in this range. So the frequency is 11.

Step5: Count data in 40 - 49.9

Count values between 40 and 49.9. The values 40.3, 43.1, 43.5, 43.9, 46.7, 48.3, 49.5, 40.7 fall in this range. So the frequency is 8.

Answer:

Class	Frequency
10 - 19.9	3
20 - 29.9	10
30 - 39.9	11
40 - 49.9	8