Adata set consists of 83 observations. how many classes would you recommend for a frequency distribution?

solution:

First determine number of classes using 2 to the k rule

2⁶ = 64

64 is less than 83,  

So,

6 classes is not enouth.

Try the next highest number = 2⁷ = 128

128 is greater then 83  

So,  

The recommended number of classes is 7.

neither i nor ii 56 / 4.9 = 11.91489362 and 82 / (11+5) =5.125 so i is wrong

ii. (24/8+2) times 3 = 15 and (42+9)/2 =25.5

step-by-step explanation:

56

1. 8

2. 9

3. 20

4. 3

5. 17

6. 2.2

7. 11.25

8. 1

9. 14

10. 2

step-by-step explanation:

thats the first half