Rating’s feedback as poor, good and excellent of 5 customers is collected in a shop. If feedback of two more customers are recorded, then choose the correct option(s). (Assume initial data was bimodal)
New dataset will always be bimodal.
New dataset may change as unimodal.
Median of new dataset will always remain same.
Median of new dataset may change.
μ
Var(X)
−μ
0
If X and Y are independent Poisson random variables with expectations 3 and 5 respectively, then find the variance of 2X + Y .
17
11
23
Insufficient information
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The IIT Madras BS Statistics for Data Science I (Stats 1) End Term paper sat on 30 Apr 2023, in the January 2023 term, set QPF1-S2: 14 questions for 40 marks in 180 minutes. The first 3 questions are below. Sign in with Google — it is free — to see the whole paper with its answers and explanations, in learning mode or as a timed mock test.
| Feature | Stats 1 End Term 30 Apr 2023 Set QPF1-S2 at a glance |
|---|---|
| Term | January 2023 term |
| Subject | Statistics for Data Science I |
| Course code | BSMA1002 |
| Questions | 14 |
| Marks | 40 |
| Duration | 180 min |
| MSQ | 2 |
| MCQ | 5 |
| Numerical | 7 |
| Official paper | IIT M FOUNDATION ET1 EXAM QPF1 S2 30 Apr 2023 |
| Negative marking | No negative marking. |
| Updated |
