General direction: Please turn in your answer as pdf or jpg file and show your solution. Not following
directions (–5 points).
I. Determine the level of measurement. (Nominal, ordinal, Interval, Ratio) (5 points)
1. Types of markers (washable, permanent, etc.)
2. Weights of M&M candies
3. Colors of M&M candies
4. Cars described as compact, midsize, and full–size
5. Number of hours spent exercising last week
II. Complete the frequency distribution table below. (10 points)
The following data represent the IQs of 50 police applicants who passed the 1st screening test. Construct
a frequency distribution table with 7 classes.
120 118 110 112 120 116 107 120 115 109
117 110 112 114 113 108 112 118 100 125
121 120 111 111 120 110 114 117 127 126
115 117 122 110 105 113 118 118 134 104
111 122 114 109 118 119 118 124 105 134
Class limits Frequency Class
Marks
Class Boundaries Cumulative
Frequency
Relative
Frequency
III. Graph your frequency distribution table as Frequency Histogram. (Use class boundaries as your
horizontal value). (5 points)
IV. Determine the mean, variance and standard deviation of the following 8 sample production units of a certain company: 10, 11, 9, 17, 13, 15, 13, 20. (5 points)
