Range and correlation coefficient

Reference no: EM1319358

1. Which of the following best describes: 'the measure of the degree of association found between two characteristics in a series of observations?

a. Mean

b. Standard deviation

c. Correlation efficient

d. Standard error of the mean

2. Determine the range of the following set of whole numbers: 12, 13, 15, 17, 12, 18, 12, 19, 13, 12, 14, 13, 12, 15

a. 12-13

b. 12-19

c. 13-14

d. 13-15

3. When considering the standard bell curve, what percentage of observation lies within +/-2 standard deviation of the mean?

a. 68

b. 75

c. 95

d. 99

Reference no: EM1319358

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