Question

In a histogram, how do you find the groups if you only have the mean?

Answer 1

what do you define as groups?

Answer 2

class midpoints

Answer 3

there seems to be more to this question that your hiding lol

Answer 4

range/5 is a good rule of thumb to determine class width

Answer 5

I was given a histogram of class midpoints and i have to make a grouped frequency table

Answer 6

there is a range of 4 between the midpoints

Answer 7

the first midpoint is 6.5 the second is 10.5 next 14.5 then 18.5 and 22.5. I need to find the starting point.

Answer 8

what is youre data? is it a relative freq distribution?

Answer 9

well, the histogram IS a freqdist right :)

Answer 10

right

Answer 11

its just laid out differently

Answer 12

itd be better if i could see your data

Answer 13

i attached it

Answer 14

well; they give you your midpoints :)

Answer 15

the class width is just the difference between them as well

Answer 16

ok so that is 4, right?

Answer 17

so for the first one it would be 4.5-8.5?

Answer 18

yes;

6-9 | 6/25
10-13 | 6/25
14-17 | 6/25
19-21 | 3/25
22-25 | 4/25

Answer 19

if you wanna go for a precise class boundary add them together and divide by 2

Answer 20

but really, that kind of precision is unnessecary

Answer 21

thank you