SSC CGL - Statistics — Mean, Median, Mode, Standard Deviation Online Test (MCQ Quiz)

1. What is the arithmetic mean of the numbers 2, 4, 6, 8, 10?

A) 4 B) 5 C) 6 D) 8

2. Given the data set: 3, 5, 2, 8, 5, 9, 5, 1, 7. What is the median?

A) 2 B) 5 C) 7 D) 8

3. In the data set {10, 12, 15, 12, 18, 12, 10}, which value occurs most frequently?

A) 10 B) 12 C) 15 D) 18

4. What is the mode of the following numbers: 7, 8, 9, 7, 8, 7, 10, 11?

A) 7 B) 8 C) 9 D) 10

5. If the mean of five numbers is 10, what is their sum?

A) 5 B) 15 C) 50 D) 100

6. Calculate the median for the data: 15, 12, 18, 10, 20, 14.

A) 13 B) 13.5 C) 14 D) 14.5

7. Which measure of central tendency is most affected by extreme values (outliers)?

A) Median B) Mode C) Mean D) Range

8. What is the mode of the data set: {2, 2, 3, 4, 4, 4, 5, 5}?

A) 2 B) 3 C) 4 D) 5

9. Find the mean of the first 5 natural numbers.

A) 1 B) 2 C) 3 D) 5

10. What is the median of the set {1, 3, 5, 7, 9}?

A) 1 B) 3 C) 5 D) 9

11. The mode of a distribution is the value that:

A) Occurs least frequently B) Occurs most frequently C) Is the middle value D) Is the average of the highest and lowest values

12. If the median of the set {x, 2x, 3x} is 10, what is the value of x?

A) 2 B) 4 C) 5 D) 10

13. What is the mean of the numbers 5, 5, 5, 5, 5?

A) 1 B) 5 C) 25 D) 50

14. For a symmetrical distribution, which of the following is generally true?

A) Mean > Median > Mode B) Mean < Median < Mode C) Mean = Median = Mode D) Mean = Median ≠ Mode

15. What is the standard deviation of the data set {5, 5, 5, 5, 5}?

A) 0 B) 1 C) 5 D) 25

16. Calculate the mean of the following frequency distribution: Value: 2, 4, 6 Frequency: 3, 2, 1

A) 3 B) 3.5 C) 4 D) 4.5

17. Find the median of the data: 10, 20, 30, 40, 50, 60.

A) 30 B) 35 C) 40 D) 45

18. What is the mode of the numbers: 1, 2, 3, 1, 2, 1, 4?

A) 1 B) 2 C) 3 D) 4

19. If the sum of 10 observations is 120, what is their mean?

A) 10 B) 12 C) 120 D) 1200

20. What does standard deviation measure?

A) The central value of a data set B) The most frequent value in a data set C) The spread or dispersion of data around the mean D) The range between the highest and lowest values

21. What is the median of the set {2, 4, 6, 8}?

A) 4 B) 5 C) 6 D) 8

22. Find the mode of the data: 5, 7, 9, 5, 7, 5, 10, 5.

A) 5 B) 7 C) 9 D) 10

23. If the mean of a data set is 25 and the sum of observations is 250, how many observations are there?

A) 5 B) 10 C) 25 D) 50

24. Which of the following is NOT a measure of central tendency?

A) Mean B) Median C) Mode D) Variance

25. What is the mean of the numbers 1, 2, 3, 4, 5?

A) 1 B) 2 C) 3 D) 4

26. Find the median of the data: 11, 13, 15, 17, 19.

A) 11 B) 13 C) 15 D) 17

27. What is the mode of the numbers: 10, 15, 10, 20, 10, 15?

A) 10 B) 15 C) 20 D) 25

28. If the mean of the first 'n' natural numbers is 15, what is the value of 'n'?

A) 15 B) 20 C) 29 D) 30

29. Which measure is represented by the middle value in an ordered data set?

A) Mean B) Median C) Mode D) Standard Deviation

30. What is the standard deviation of a data set where all values are the same?

A) 0 B) 1 C) Equal to the value D) Cannot be determined

31. Calculate the mean of the following numbers: 10, 20, 30, 40.

A) 15 B) 20 C) 25 D) 30

32. Find the median of the data: 8, 12, 10, 14, 6.

A) 8 B) 10 C) 12 D) 14

33. What is the mode of the numbers: 3, 5, 3, 7, 5, 3, 8?

A) 3 B) 5 C) 7 D) 8

34. If the sum of 6 numbers is 72, what is their mean?

A) 6 B) 12 C) 72 D) 432

35. Which of the following is a measure of dispersion?

A) Mean B) Median C) Mode D) Standard Deviation

36. What is the mean of the first 10 even numbers (starting from 2)?

A) 10 B) 11 C) 20 D) 22

37. Find the median of the data: 25, 15, 35, 5, 45.

A) 5 B) 15 C) 25 D) 35

38. What is the mode of the numbers: 100, 101, 102, 101, 100, 101?

A) 100 B) 101 C) 102 D) 103

39. If the median of the set {5, 10, 15, x, 25} is 15, what can be said about x?

A) x must be 15 B) x must be greater than or equal to 15 C) x must be less than or equal to 15 D) x can be any real number

40. What is the variance of a data set with a standard deviation of 5?

A) 5 B) 10 C) 25 D) 50

41. Calculate the mean of the following numbers: 7, 8, 9, 10, 11.

A) 7 B) 8 C) 9 D) 10

42. Find the median of the data: 40, 30, 50, 20, 60, 10.

A) 20 B) 30 C) 35 D) 40

43. What is the mode of the numbers: 2.5, 3.1, 2.5, 4.0, 3.1, 2.5?

A) 2.5 B) 3.1 C) 4.0 D) 5.6

44. If the mean of a set of numbers is 10 and the median is 12, what kind of skewness does the data likely exhibit?

A) Symmetrical B) Positively skewed (right-skewed) C) Negatively skewed (left-skewed) D) Bimodal

45. What is the standard deviation of the numbers 1, 2, 3?

A) 0 B) 1 C) sqrt(2/3) D) sqrt(2)

46. In a frequency distribution, the mean is calculated by summing the products of each value and its frequency, then dividing by:

A) The number of distinct values B) The highest value C) The total frequency D) The median

47. What is the median of the following set: {1, 1, 2, 3, 3, 3, 4}?

A) 1 B) 2 C) 3 D) 4

48. Which measure is least affected by outliers?

A) Mean B) Median C) Mode D) Standard Deviation

49. What is the mode of the set {10, 20, 30, 40, 50}?

A) 10 B) 20 C) 30 D) No mode

50. If the mean of the first n odd numbers is 25, what is the value of n?

A) 5 B) 25 C) 49 D) 50

Statistics — Mean, Median, Mode, Standard Deviation - Online Test

Test Results