Probability & Statistics

6 questions available

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All Basic Probability 16 Mean 11 Median Mode Data Interpretation 6 Tables & Graphs
Showing 1–6 of 6

Q1.Which newspaper was read by a higher percentage of females than males in Year 3 according to the readership data?

Medium
A DAWN news
B American Times
C The Tribune
D Newsday
Data Interpretation PPSC

Correct Answer: D

According to the table, Newsday has a readership of 12% among females and 10% among males in Year 3, which is the only one where females exceed males.

Q2.What is the mode of the series: 11, 22, 33, 44, 55, 66, 77, 88, 99?

Medium
A 55
B 11
C No mode
D 99
Data Interpretation PPSC

Correct Answer: C

The mode is the value that appears most frequently in a data set. Since all numbers in this series appear exactly once, there is no mode.

Q3.A series contains values 4, 4, 4, 4, 4, 4. Its standard deviation is?

Medium
A 1
B 2
C 0
D 4
Data Interpretation PPSC

Correct Answer: C

Standard deviation measures the dispersion of a dataset. Since all values in the series are identical, there is no variation, and the standard deviation is 0.

Q4.A series contains values 5, 9, 3, 1, 4, 6. Its median is?

Medium
A 3
B 4.5
C 5
D 4
Data Interpretation PPSC

Correct Answer: B

Sort the values: 1, 3, 4, 5, 6, 9. Since there are 6 values (even), the median is the average of the two middle numbers: (4 + 5) / 2 = 4.5.

Q5.The median of the observations 3, 5, 4, 3, 8, 6, 4 is ______?

Medium
A 6
B 5
C 4
D None of these
Data Interpretation PPSC

Correct Answer: C

Sort the observations: 3, 3, 4, 4, 5, 6, 8. The median of an odd number of values (7) is the middle value (the 4th value), which is 4.

Q6.What is the size of the class interval (4-7)?

Medium
A 5
B 3
C 6
D None of these
Data Interpretation PPSC

Correct Answer: B

Size of class interval = Upper limit − Lower limit = 7 − 4 = 3.