2

Data Science

Unit 2 - Distributions in Data Science

213+ practice questions available

Sample Practice Questions

5 questions shown — tap “Show Answer” to check yours.

1
Easy

Theoretical probability of rolling a 4 on a fair die is:

A1/2
B1/3
C1/6
D1/12
2
Medium

The class width in grouped data 0-10, 10-20, 20-30 is:

A5
B10
C15
D20
3
Medium

The mode of Binomial(n=10, p=0.5) is:

A2
B5
C8
D10
4
Hard

Sample of size 25 from population with μ=50, σ=10. Probability that sample mean lies in (48, 52)?

AAbout 50%
BAbout 68%
CAbout 95%
DCannot tell
5
Hard

Type I error in hypothesis testing is:

ARejecting null when it is true (false alarm)
BAccepting null when it is false
CComputational error
DSample size error

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