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Malabika Guha Mustafi
Nov 10, 2020, 11:11:43 AM11/10/20
to Discussion forum for Statistics for Data Science I
Calculate sample covariance for the following dataset:
x: 2,4,7,11
y: 30, 49, 60, 55
x: 2,4,7,11
y: 30, 49, 60, 55
I got 39.66.
Dipankar Goswami
Nov 12, 2020, 10:15:50 AM11/12/20
to Discussion forum for Statistics for Data Science I, Malabika Guha Mustafi
Hi,
Sharing my calculations here.
mean(x) = 6
mean(y) = 48.5
Sum of last column is 117.
So, sample covariance would be 117/3 = 39
Regards,
Dipankar
Malabika Guha Mustafi
Nov 12, 2020, 10:49:30 AM11/12/20
to Dipankar Goswami, Discussion forum for Statistics for Data Science I
Got it. I did not consider - sign in second observation during calculation so +1 instead of -1. Thank you.
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