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Rishank Sharma
Nov 7, 2020, 7:53:27 AM11/7/20
to Discussion forum for Statistics for Data Science I
Hello sir/mam
I have a doubt in answers of Activity question-5 (Q-5,Q-6,Q-7),there answers are wrong?
Instead answers should be 35,42,7 as per formulae given in session.
Please clarify
Regards,
Statistics 1 Support 1
Nov 8, 2020, 2:27:23 AM11/8/20
to Discussion forum for Statistics for Data Science I, risha...@gmail.com
Hi,
Can you please tell which week you are talking about?
Thanks
Rishank Sharma
Nov 8, 2020, 4:16:40 AM11/8/20
to Discussion forum for Statistics for Data Science I, stats1-...@onlinedegree.iitm.ac.in, Rishank Sharma
Sir,
Week-3
Rahul
Nov 8, 2020, 4:54:36 AM11/8/20
to Discussion forum for Statistics for Data Science I
To compute percentile, you first need to arrange the data given in ascending order.
This is how the data look like once we arrange them in ascending order.
15 23 25 29 31 35 37 42 54
Question 5 - Value of 25th percentile.
n = 9
p = 0.25
n * p = 9 * 0.25 = 2.25.
Since 2.25 isn't an integer, we take the smallest integer greater than 2.25 which is 3. So the 3rd observation in the ordered set is the value we are looking for - 25.
Question 6 - 75th percentile
n * p = 9 * 0.75 = 6.75.
As above, we take the smallest integer greater than 6.75, which is 7. 7th observation is 37.
Question 7
IQR = Q3 - Q1
37 - 25 = 12
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