An inspection officer wants to test the tensile strength of threaded rods produced by a factory. If the inspection officer is interested to test the tensile strength of threaded rods produced by the factory in different months of year 2022 and collected the data for the same, then choose the correct option:
It is time-series data.
It is cross-sectional data.
A survey is conducted to assess the monthly income of families in a town. Respondents are asked to select one of the following options:
• Less than Rs. 20000
• Rs. 20000 - Rs. 40000
• Rs. 40000 - Rs. 60000
• More than Rs. 60000
What kind of scale of measurement has been used here?
Ordinal
Interval
Ratio and interval
Both ordinal and interval
Choose the correct option:
If the large values of variable X tend to be associated with small values of variable Y, then the correlation between X and Y will be positive.
If the points are located densely in a scatter diagram, then we can always expect a poor correlation between the variables.
Correlation is a unitless measure of association.
Correlation always lie between 0 and 1.
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The IIT Madras BS Statistics for Data Science I (Stats 1) Qualifier paper sat on 16 Mar 2025, in the January 2025 term: 17 questions for 40 marks in 120 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 Qualifier 16 Mar 2025 at a glance |
|---|---|
| Term | January 2025 term |
| Subject | Statistics for Data Science I |
| Course code | BSMA1002 |
| Questions | 17 |
| Marks | 40 |
| Duration | 120 min |
| MCQ | 7 |
| MSQ | 4 |
| Numerical | 6 |
| Official paper | IIT M QUALIFIER AN EXAM QDQ1 16 Mar 2025 |
| Negative marking | No negative marking. |
| Updated |
