Updated v1.1 of Shortcut formulae PDF

CG

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Nov 19, 2020, 5:32:38 AM11/19/20

to Discussion forum for Statistics for Data Science I

Change log:

Added formula for Sample Point Bi-serial correlation coefficient
Added effect of manipulating data with constant for Covariance and correlation coefficient
Added scatter plot examples so that questions such as Q9 in the Mock Test can be quickly answered using the graphical method.

Statistics 1 - Shortcut Formulae - v1.1.pdf

Malabika Guha Mustafi

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Nov 20, 2020, 12:58:08 AM11/20/20

to Discussion forum for Statistics for Data Science I, CG

Very good job. Thank you very much.

Sanchi Priyanshu

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Nov 21, 2020, 2:05:02 AM11/21/20

to Discussion forum for Statistics for Data Science I, Malabika Guha Mustafi, CG

are all the valu of +c and*c and affecting by outliers in the pdf correct or not

please someone check and confirm each value

rakesh ky

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Nov 22, 2020, 9:01:06 PM11/22/20

to Discussion forum for Statistics for Data Science I, CG

how was your exam yesterday esp math subj @CG

Cherian George

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Nov 22, 2020, 9:48:22 PM11/22/20

to rakesh ky, Discussion forum for Statistics for Data Science I, Malabika Guha Mustafi

I answered all the questions in order.

Took 25 mins for English I

25 mins for CT

102 mins for Stat I (Here I wasted time re-doing the calculations to confirm they are correct on the online calculator. Didn't answer last 5 questions)

was left with 58 mins for Maths I (Rushed through it and again skipped 5 questions)

Out of the 5 questions I skipped in Maths, 2 were relatively simple - The first chemical company question (120+90-150=60). The parabola bridge question (Length of support cable at 50 m = 25 m)

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