1 You measure some variable, and get the following set of raw scores: 3. 5. 6. 8. 77 What would be the best measure of central tendency to use with these data? A) Mean B) Weighted mean C) Median D) Mode Q.2 You measure some variable, and get the following set of raw scores: 3. 5. 6. 8. 77 What would be the worst measure of central tendency to use with these data? A)Mode B) Weighted mean C) Median D) Mean Q.3 You decided to conduct a survey asking respondents what their favorite color is. The best measure of central tendency for these data would be A)Mean B) Weighted mean C)Mode D) Median Q.4 Examine the following table X f 5 8 4 3 3 3 2 2 1 1 The shape of the data set would be A) Normal B) Positively Skewed C) Negatively Skewed D) Symmetrical, but not normal Q.5 Examine the following table: X f 5 8 4 3 3 3 2 2 1 1 The median for this data set is A) 8 B) 4 C) 3 d) median cannot be determined Q.6 Examine the following table: X f 5 8 4 3 3 3 2 2 1 1 How many raw scores are in this data set? A) N=17 B) N=15 C) N=5 D) N cannot be determined Q.7 A variable has been measured for a sample of n = 20 subjects. The mean is M = 50, and the sum of squared deviation scores is SS = 490. What is the value for the sample variance? A) sample variance = 25.79 B) sample variance = 24.50 C) sample variance = 10.00 D) sample variance = 9.80 Q.8 A variable has been measured for a sample of n = 20 subjects. The mean is M = 50, and the sum of squared deviation scores is SS = 490. What is the value for the sample standard deviation? A) sample standard deviation = 3.13 B) sample standard deviation = 3.16 C) sample standard deviation = 4.95 D) sample standard deviation = 5.08 Q.9 A set of data for a population has a mean of u = 100, with a standard deviation of o = 10. An individual raw score of X = 105 would be correctly described as A) above the average or common range of scores B) within the average or common range of scores C) below the average or common range of scores D) uncharacteristic of a categorical parameter Q.10 A set of data for a population has a mean of u = 75, with a standard deviation of o = 6. Approximately 70% of all the data would fall between the scores of A) X = 69 and X = 81 B) X = 63 and X = 87 C) X = 69 and X = 75 D) X = 75 and X = 87