QID #26258
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which statement best explains Independent events?
A
Events for which occurrence of one does not change probability of the other
B
Events that cannot occur simultaneously
C
Middle value after arranging observations in order
D
Difference arising because a sample rather than the whole population is observed
Correct Answer: A. Events for which occurrence of one does not change probability of the other
Question: Which statement best explains Independent events?
A. Events for which occurrence of one does not change probability of the other
B. Events that cannot occur simultaneously
C. Middle value after arranging observations in order
D. Difference arising because a sample rather than the whole population is observed
Correct Answer: A. Events for which occurrence of one does not change probability of the other
Explanation: Independent events: Events for which occurrence of one does not change probability of the other
QID #26257
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which of the following is best described as: Events for which occurrence of one does not change probability of the other
A
Mode
B
Independent events
C
Regression
D
Population
Correct Answer: B. Independent events
Question: Which of the following is best described as: Events for which occurrence of one does not change probability of the other
A. Mode
B. Independent events
C. Regression
D. Population
Correct Answer: B. Independent events
Explanation: The correct answer is Independent events. Events for which occurrence of one does not change probability of the other
QID #26256
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which statement best explains Mutually exclusive events?
A
Average squared deviation from the mean, according to the chosen population or sample formula
B
Complete set of units or observations of interest
C
Events that cannot occur simultaneously
D
Numerical measure between 0 and 1 describing likelihood of an event
Correct Answer: C. Events that cannot occur simultaneously
Question: Which statement best explains Mutually exclusive events?
A. Average squared deviation from the mean, according to the chosen population or sample formula
B. Complete set of units or observations of interest
C. Events that cannot occur simultaneously
D. Numerical measure between 0 and 1 describing likelihood of an event
Correct Answer: C. Events that cannot occur simultaneously
Explanation: Mutually exclusive events: Events that cannot occur simultaneously
QID #26255
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which of the following is best described as: Events that cannot occur simultaneously
A
Sample
B
Mutually exclusive events
C
Variance
D
Coefficient of variation
Correct Answer: B. Mutually exclusive events
Question: Which of the following is best described as: Events that cannot occur simultaneously
A. Sample
B. Mutually exclusive events
C. Variance
D. Coefficient of variation
Correct Answer: B. Mutually exclusive events
Explanation: The correct answer is Mutually exclusive events. Events that cannot occur simultaneously
QID #26254
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which statement best explains Probability?
A
Numerical measure between 0 and 1 describing likelihood of an event
B
Variable whose numerical value depends on the outcome of a random experiment
C
Sum of observations divided by the number of observations
D
Subset selected from a population for study
Correct Answer: A. Numerical measure between 0 and 1 describing likelihood of an event
Question: Which statement best explains Probability?
A. Numerical measure between 0 and 1 describing likelihood of an event
B. Variable whose numerical value depends on the outcome of a random experiment
C. Sum of observations divided by the number of observations
D. Subset selected from a population for study
Correct Answer: A. Numerical measure between 0 and 1 describing likelihood of an event
Explanation: Probability: Numerical measure between 0 and 1 describing likelihood of an event
QID #26253
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which of the following is best described as: Numerical measure between 0 and 1 describing likelihood of an event
A
Negative correlation
B
Census
C
Probability
D
Positive correlation
Correct Answer: C. Probability
Question: Which of the following is best described as: Numerical measure between 0 and 1 describing likelihood of an event
A. Negative correlation
B. Census
C. Probability
D. Positive correlation
Correct Answer: C. Probability
Explanation: The correct answer is Probability. Numerical measure between 0 and 1 describing likelihood of an event
QID #26252
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which statement best explains Coefficient of variation?
A
Sum of observations divided by the number of observations
B
Standard deviation expressed relative to the mean, commonly as a percentage
C
Complete enumeration of all units in a population
D
Events for which occurrence of one does not change probability of the other
Correct Answer: B. Standard deviation expressed relative to the mean, commonly as a percentage
Question: Which statement best explains Coefficient of variation?
A. Sum of observations divided by the number of observations
B. Standard deviation expressed relative to the mean, commonly as a percentage
C. Complete enumeration of all units in a population
D. Events for which occurrence of one does not change probability of the other
Correct Answer: B. Standard deviation expressed relative to the mean, commonly as a percentage
Explanation: Coefficient of variation: Standard deviation expressed relative to the mean, commonly as a percentage
QID #26251
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which of the following is best described as: Standard deviation expressed relative to the mean, commonly as a percentage
A
Normal distribution
B
Regression
C
Median
D
Coefficient of variation
Correct Answer: D. Coefficient of variation
Question: Which of the following is best described as: Standard deviation expressed relative to the mean, commonly as a percentage
A. Normal distribution
B. Regression
C. Median
D. Coefficient of variation
Correct Answer: D. Coefficient of variation
Explanation: The correct answer is Coefficient of variation. Standard deviation expressed relative to the mean, commonly as a percentage
QID #26250
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which statement best explains Standard deviation?
A
Symmetric bell-shaped continuous distribution characterized by mean and variance
B
Middle value after arranging observations in order
C
Difference arising because a sample rather than the whole population is observed
D
Positive square root of variance
Correct Answer: D. Positive square root of variance
Question: Which statement best explains Standard deviation?
A. Symmetric bell-shaped continuous distribution characterized by mean and variance
B. Middle value after arranging observations in order
C. Difference arising because a sample rather than the whole population is observed
D. Positive square root of variance
Correct Answer: D. Positive square root of variance
Explanation: Standard deviation: Positive square root of variance
QID #26249
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which of the following is best described as: Positive square root of variance
A
Mutually exclusive events
B
Standard deviation
C
Variance
D
Sample
Correct Answer: B. Standard deviation
Question: Which of the following is best described as: Positive square root of variance
A. Mutually exclusive events
B. Standard deviation
C. Variance
D. Sample
Correct Answer: B. Standard deviation
Explanation: The correct answer is Standard deviation. Positive square root of variance
QID #26248
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which statement best explains Variance?
A
Average squared deviation from the mean, according to the chosen population or sample formula
B
Relationship in which variables tend to move in the same direction
C
Difference between maximum and minimum values
D
Standard deviation expressed relative to the mean, commonly as a percentage
Correct Answer: A. Average squared deviation from the mean, according to the chosen population or sample formula
Question: Which statement best explains Variance?
A. Average squared deviation from the mean, according to the chosen population or sample formula
B. Relationship in which variables tend to move in the same direction
C. Difference between maximum and minimum values
D. Standard deviation expressed relative to the mean, commonly as a percentage
Correct Answer: A. Average squared deviation from the mean, according to the chosen population or sample formula
Explanation: Variance: Average squared deviation from the mean, according to the chosen population or sample formula
QID #26247
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which of the following is best described as: Average squared deviation from the mean, according to the chosen population or sample formula
A
Probability
B
Variance
C
Independent events
D
Negative correlation
Correct Answer: B. Variance
Question: Which of the following is best described as: Average squared deviation from the mean, according to the chosen population or sample formula
A. Probability
B. Variance
C. Independent events
D. Negative correlation
Correct Answer: B. Variance
Explanation: The correct answer is Variance. Average squared deviation from the mean, according to the chosen population or sample formula
QID #26246
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which statement best explains Range?
A
Relationship in which variables tend to move in opposite directions
B
Average squared deviation from the mean, according to the chosen population or sample formula
C
Difference between maximum and minimum values
D
Positive square root of variance
Correct Answer: C. Difference between maximum and minimum values
Question: Which statement best explains Range?
A. Relationship in which variables tend to move in opposite directions
B. Average squared deviation from the mean, according to the chosen population or sample formula
C. Difference between maximum and minimum values
D. Positive square root of variance
Correct Answer: C. Difference between maximum and minimum values
Explanation: Range: Difference between maximum and minimum values
QID #26245
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which of the following is best described as: Difference between maximum and minimum values
A
Population
B
Correlation
C
Range
D
Variance
Correct Answer: C. Range
Question: Which of the following is best described as: Difference between maximum and minimum values
A. Population
B. Correlation
C. Range
D. Variance
Correct Answer: C. Range
Explanation: The correct answer is Range. Difference between maximum and minimum values
QID #26244
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which statement best explains Mode?
A
Measure of direction and strength of association between variables
B
Most frequently occurring value
C
Numerical measure between 0 and 1 describing likelihood of an event
D
Symmetric bell-shaped continuous distribution characterized by mean and variance
Correct Answer: B. Most frequently occurring value
Question: Which statement best explains Mode?
A. Measure of direction and strength of association between variables
B. Most frequently occurring value
C. Numerical measure between 0 and 1 describing likelihood of an event
D. Symmetric bell-shaped continuous distribution characterized by mean and variance
Correct Answer: B. Most frequently occurring value
Explanation: Mode: Most frequently occurring value
QID #26243
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which of the following is best described as: Most frequently occurring value
A
Regression
B
Arithmetic mean
C
Positive correlation
D
Mode
Correct Answer: D. Mode
Question: Which of the following is best described as: Most frequently occurring value
A. Regression
B. Arithmetic mean
C. Positive correlation
D. Mode
Correct Answer: D. Mode
Explanation: The correct answer is Mode. Most frequently occurring value
QID #26242
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which statement best explains Median?
A
Difference between maximum and minimum values
B
Most frequently occurring value
C
Relationship in which variables tend to move in the same direction
D
Middle value after arranging observations in order
Correct Answer: D. Middle value after arranging observations in order
Question: Which statement best explains Median?
A. Difference between maximum and minimum values
B. Most frequently occurring value
C. Relationship in which variables tend to move in the same direction
D. Middle value after arranging observations in order
Correct Answer: D. Middle value after arranging observations in order
Explanation: Median: Middle value after arranging observations in order
QID #26241
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which of the following is best described as: Middle value after arranging observations in order
A
Median
B
Standard deviation
C
Sample
D
Sampling error
Correct Answer: A. Median
Question: Which of the following is best described as: Middle value after arranging observations in order
A. Median
B. Standard deviation
C. Sample
D. Sampling error
Correct Answer: A. Median
Explanation: The correct answer is Median. Middle value after arranging observations in order
QID #26240
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which statement best explains Arithmetic mean?
A
Symmetric bell-shaped continuous distribution characterized by mean and variance
B
Difference between maximum and minimum values
C
Sum of observations divided by the number of observations
D
Middle value after arranging observations in order
Correct Answer: C. Sum of observations divided by the number of observations
Question: Which statement best explains Arithmetic mean?
A. Symmetric bell-shaped continuous distribution characterized by mean and variance
B. Difference between maximum and minimum values
C. Sum of observations divided by the number of observations
D. Middle value after arranging observations in order
Correct Answer: C. Sum of observations divided by the number of observations
Explanation: Arithmetic mean: Sum of observations divided by the number of observations
QID #26239
UPSC UPSC EPFO APFC 2026 Mock Test Series UPSC EPFO APFC Statistics Sectional Test 2026 Medium
Which of the following is best described as: Sum of observations divided by the number of observations
A
Arithmetic mean
B
Median
C
Sampling error
D
Independent events
Correct Answer: A. Arithmetic mean
Question: Which of the following is best described as: Sum of observations divided by the number of observations
A. Arithmetic mean
B. Median
C. Sampling error
D. Independent events
Correct Answer: A. Arithmetic mean
Explanation: The correct answer is Arithmetic mean. Sum of observations divided by the number of observations
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