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

Quote:

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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

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First sort the data into ascending or decending order.

RonL

Quote:

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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

Quote:

---

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

Quote:

---

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

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Thanks! Ront

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

Quote:

---

Originally Posted by cu4mail

Thanks! Ront

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

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What is your definition of symatrical?

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

RonL