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PGDE Regular Entrance 2080 Part 4

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31. Which measure of central tendency represents the most frequently occurring value?

a. mean

b. median

c. mode

d. range

32. What is the result of adding all the numbers in a data set a dividing by the total number of values?

a. mean

b. median

c. mode

d. rang

33. What does the range of a data set represent?

a. the difference between the highest and lowest values

b. the average of all values

c. the most frequently occurring value

d. the middle value

34. What is the formula to calculate the range of a data set?

a. highest value - lowest value

b. sum of all values / number of values

c. (highest value + lowest value) / 2

d. none of the above

35. Which statistic describes how spread out the values in a data set are?

a. mean

b. median

c. mode

d. standard deviation

36. What does a correlation coefficient measure?

a. the strength of the relationship between two variables

b. the difference between the mean and median

c. the frequency of a particular value

d. the shape of the distribution

37. If the correlation coefficient is close to 1, what does it indicate?

a. a strong positive relationship

b. a strong negative relationship

c. no relationship

d. cannot be determined

38. Which statistic is used to measure the variability of a data set?

a. mean

b. median

c. variance

d. mode

39. What is the probability of rolling a 6 on a fair six-sided die?

b. 1/4

a. 1/6

c. 1/3

d/1/2

40. What is the mode of the following set of numbers. 3. 5. 5, 7, 7, 7, 9, 9, 9, 97

a. 5

b. 7

c. 9

d. none of the above

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