eddy2017
Elite Member
- Joined
- Oct 27, 2017
- Messages
- 2,525
Hi, this is a new twist to the types of central tendency exercises i have come across after starting studying the subject.
the following table of grouped data represents the weight ( in pounds) of 100 computer towers. calculate the mean weight for a computer.
This problem has me baffled in that I don't know what to do with the left column( weight). they give me a range of the weight, that I know, but what to do
weight # of computers
[3-5) ---------------8
{5-7)---------------25
[7-9)---------------45
[9-11)--------------18
[11-13)-------------4
I suppose I can find a mid value in every range given, right,
as in, [3-5) mid value 4, and so for and so on with the rest. but once i have done that
I might as well do it now
[3-5) -------------4
{5-7)--------------6
[7-9)-------------- 8
[9-11)--------------10
[11-13)-------------12
So, now, what do I do with the mid value, what is it useful for?.
thanks
eddy
the following table of grouped data represents the weight ( in pounds) of 100 computer towers. calculate the mean weight for a computer.
This problem has me baffled in that I don't know what to do with the left column( weight). they give me a range of the weight, that I know, but what to do
weight # of computers
[3-5) ---------------8
{5-7)---------------25
[7-9)---------------45
[9-11)--------------18
[11-13)-------------4
I suppose I can find a mid value in every range given, right,
as in, [3-5) mid value 4, and so for and so on with the rest. but once i have done that
I might as well do it now
[3-5) -------------4
{5-7)--------------6
[7-9)-------------- 8
[9-11)--------------10
[11-13)-------------12
So, now, what do I do with the mid value, what is it useful for?.
thanks
eddy