Question

find the mean and modal of the following data.
weight(in kg) 42 47 52 57 62 67 72
no. of persons 3 8 6. 8 11. 5. 9
using empirical formula,calcute its mode​

Answer 1

Answer:

Modal is 62 because it is having highest frequency.

Mean-->

fi fixi

3 42×3= 126

8 47×8= 376

6 52 ×6= 312

8 57×8= 456

11 62×11= 682

5 67×5= 335

9 72×9= 648

Total= 50 2935

Mean = sigma fixi/sigma fi

2935/50= 58.7