# Thread: Iterquartile Range?, Median & Mode?, Symmetrical?

1. ## Iterquartile Range?, Median & Mode?, Symmetrical?

HI All, plz help me solving these..

For the set of data of 20 observations
32, 30, 24, 24, 36, 33, 29, 29, 30, 28
57, 52, 51, 49, 55, 54, 50, 48, 53, 56

a) Find interquartile range, Quartile deviation.
b) Also find out the median and mode by using excel operations.
c) Is data perfectly symmetrical or not .Give answer with arguments?

thnx

2. Originally Posted by cu4mail
HI All, plz help me solving these..

For the set of data of 20 observations
32, 30, 24, 24, 36, 33, 29, 29, 30, 28
57, 52, 51, 49, 55, 54, 50, 48, 53, 56

a) Find interquartile range, Quartile deviation.
b) Also find out the median and mode by using excel operations.
c) Is data perfectly symmetrical or not .Give answer with arguments?

thnx
First sort the data into ascending or decending order.

RonL

3. Originally Posted by CaptainBlack
First sort the data into ascending or decending order.

RonL
24
24
28
29
29
30
30
32
33
36
48
49
50
51
52
53
54
55
56
57

Sorted in Ascending Order

4. Originally Posted by cu4mail
24
24
28
29
29
30
30
32
33
36
48
49
50
51
52
53
54
55
56
57

Sorted in Ascending Order
24
28
29
29
30
------- 1st quartile 30
30
32
33
36
48--------median
49
50
51
52
------- 3rd quartile 52.5
53
54
55
56
57

RonL

5. Originally Posted by CaptainBlack
24
28
29
29
30
------- 1st quartile 30
30
32
33
36
48--------median
49
50
51
52
------- 3rd quartile 52.5
53
54
55
56
57

RonL
Thanks! Ront

Can u also please help me how to determine if this data is symmetrical?

6. Originally Posted by cu4mail
Thanks! Ront

Can u also please help me how to determine if this data is symmetrical?
What is your definition of symatrical?

The data are not since the two modes are both less than the mean.

RonL