QTDM-II Internal Assessment Practice
Quiz by Saikat Das
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- Q1
The purpose of inferential statistics is to:
Summarize historical data
Visualize data patterns
Make predictions about a population from a sample
Analyze the entire population directly
120s - Q2
A probability value must always lie between:
0 and infinity
-∞ and +∞
-1 and 1
0 and 1
120s - Q3
If events A and B are mutually exclusive, the probability of A ∩ B is:
0
P(A)+ P(B)
1
P(A)× P(B)
120s - Q4
If P(A|B) = 0.7, what does it mean?
Probability of A and B occurring together is 0.7
Probability of A given B has occurred is 0.7
Event A occurs with event B 70% of the time
Event A occurs 70% of the time
120s - Q5
A company conducts a survey where 80% of respondents prefer online shopping, and 50% of respondents are women. If these two events are independent, what is the probability that a randomly selected respondent is a woman who prefers online shopping?
0.4
0.1
0.3
0.5
120s