Here Are 50 Quizzes / Multiple-Choice Questions (Mcqs) Related To
STATISTICS
Along With Their Correct Answers
1. What is the primary goal of inferential statistics
a) Describe data
b) Summarize data
c) Make predictions about a population based on a sample
d) Display data visually
Correct Answer c
2. Which measure of central tendency is affected most by outliers
a) Mean
b) Median
c) Mode
d) Range
Correct Answer a
3. In a normal distribution, what percentage of data falls within one standard
deviation from the mean
a) 34.13%
b) 68.27%
, c) 95.45%
d) 99.73%
Correct Answer b
4. What does the p-value represent in hypothesis testing
a) The probability of a Type I error
b) The probability of a Type II error
c) The level of significance
d) The likelihood of obtaining the observed results under the null hypothesis
Correct Answer d
5. Which correlation coefficient indicates the strongest linear relationship
between variables
a) -0.20
b) 0.15
c) 0.80
d) -0.70
Correct Answer c
6. What is the formula for calculating the variance of a dataset
a) ∑(x - μ)^2 n
b) ∑x n
, c) ∑(x - μ) n
d) ∑x^2 n
Correct Answer a
7. A confidence interval of 95% corresponds to a z-score of approximately
a) 1.28
b) 1.64
c) 1.96
d) 2.33
Correct Answer c
8. Which probability distribution is used to model the number of successes in a
fixed number of trials
a) Normal distribution
b) Exponential distribution
c) Binomial distribution
d) Poisson distribution
Correct Answer c
9. In a boxplot, the whiskers represent data points that are
a) Within 1.5 times the interquartile range (IQR) from the median
b) Outside 1.5 times the IQR from the median
STATISTICS
Along With Their Correct Answers
1. What is the primary goal of inferential statistics
a) Describe data
b) Summarize data
c) Make predictions about a population based on a sample
d) Display data visually
Correct Answer c
2. Which measure of central tendency is affected most by outliers
a) Mean
b) Median
c) Mode
d) Range
Correct Answer a
3. In a normal distribution, what percentage of data falls within one standard
deviation from the mean
a) 34.13%
b) 68.27%
, c) 95.45%
d) 99.73%
Correct Answer b
4. What does the p-value represent in hypothesis testing
a) The probability of a Type I error
b) The probability of a Type II error
c) The level of significance
d) The likelihood of obtaining the observed results under the null hypothesis
Correct Answer d
5. Which correlation coefficient indicates the strongest linear relationship
between variables
a) -0.20
b) 0.15
c) 0.80
d) -0.70
Correct Answer c
6. What is the formula for calculating the variance of a dataset
a) ∑(x - μ)^2 n
b) ∑x n
, c) ∑(x - μ) n
d) ∑x^2 n
Correct Answer a
7. A confidence interval of 95% corresponds to a z-score of approximately
a) 1.28
b) 1.64
c) 1.96
d) 2.33
Correct Answer c
8. Which probability distribution is used to model the number of successes in a
fixed number of trials
a) Normal distribution
b) Exponential distribution
c) Binomial distribution
d) Poisson distribution
Correct Answer c
9. In a boxplot, the whiskers represent data points that are
a) Within 1.5 times the interquartile range (IQR) from the median
b) Outside 1.5 times the IQR from the median
