National Statistics Day 2024
Authored by sini p
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12th Grade
Used 2+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which distribution is appropriate for modelling the number of arrivals at a service point in a given period of time?
Which distribution is appropriate for modelling the number of arrivals at a service point in a given period of time?
Binomial distribution
Normal distribution
Poisson distribution
Uniform distribution
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The Spearman rank correlation coefficient is used when:
The Spearman rank correlation coefficient is used when:
The data are normally distributed.
The relationship between variables is linear.
The data are ordinal.
There are no ties in the data.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If two events A and B are mutually exclusive, what is the probability of both events occurring together?
If two events A and B are mutually exclusive, what is the probability of both events occurring together?
P(A) + P(B)
P(A) * P(B)
P(A) + P(B) - P(A ∩ B)
0
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Var(Y)
0
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following values of Karl Pearson's correlation coefficient indicates the strongest linear relationship?
Which of the following values of Karl Pearson's correlation coefficient indicates the strongest linear relationship?
0.8
-0.9
0
0.3
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following statements is true about a distribution with a positive skewness?
Which of the following statements is true about a distribution with a positive skewness?
The right tail is longer than the left tail.
The left tail is longer than the right tail.
The distribution is symmetric.
The distribution has a high peak.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following scenarios can be modelled using the hypergeometric distribution?
Which of the following scenarios can be modelled using the hypergeometric distribution?
Drawing balls from an urn with replacement.
The number of successes in a sequence of independent trials.
Selecting a sample of defective items from a batch of products without replacement.
The number of arrivals at a service center.
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