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IITM BS Week 4 Statistics 1 Questions | Prasnya

Statistics 1 > Week 4

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8Q

Which of the following statement(s) is/are correct?

Multiple correct

What can be said about the association between the two variables “Reaction” and “Gender”?

03 December 2023

The following table shows the interest of engineering students in Core and Software skills. Find the probability that a student is interested in Software skills, given that the student is male. Enter the answer correct to 2 decimal accuracy.

X

contains observations of the bowling speed of a bowler and

Y

contains the observations of the bowling speed of another bowler. It is noted that each observation of

Y

1.5

times each observation of

X

. If the sample variance of

X

30

, then calculate the sample covariance between

X

Y

20 November 2022

Which of the following statements is/are incorrect about correlation coefficient?

Multiple correct

An analyst wants to know if the grades of a student are affected by the mode of delivery of education. He collects the data of students for the analysis and tabulates it in Table 1.1.Q. Choose the correct option(s).

Multiple correct

Calculate the absolute value of Point Bi-serial correlation coefficient between smoking behaviour and average working hours per week. Enter the answer correct to

2

decimal places.

Are the average working hours per week of the employees strongly influenced by their smoking behaviour?

Showing 8 questions.

Complete question index for this section:

Question 1 (multiple):
Question 2 (comprehension):
Question 3 (integer):
Question 4 (single):
Question 5 (multiple):
Question 6 (multiple):
Question 7 (comprehension):
Question 8 (comprehension):