Question

Construct a frequency distribution table for the data on weights(kg.) of 20 students of a class, using

intervals 30-40, 35-40 and so on

40, 38, 33, 48, 60, 53, 31, 46, 34, 36, 49, 41, 55, 49, 55, 42, 44, 47, 38, 39.

Do we need to have the class intervals 0-10,10-20 and20-30.Why?​

Answer 1

Answer:

Since, the class interval 10-20 is the first interval of frequency distribution and 20-30 is the next one but the number 20 is present in both intervals. We know that, the presence of 20 in the interval 10-20 is not fully 100% while in the next interval 20-30, presence of it fully 100%

Answer 2

Step-by-step explanation:

refer the attachment