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In: Statistics and Probability

1. A sample of 10 employees in the graphics department of Design, Inc. is selected. The...

1. A sample of 10 employees in the graphics department of Design, Inc. is selected. The employees’ ages are given as follows: 34 35 39 24 62 40 18 35 28 35 Compute the interquartile range of ages. a. 1 b. 11 c. 42 d. 44 e. None of these responses

2. The average grades of a sample of 8 statistics students and the number of absences they had during the semester are given as follows: Student # Absences Average Grade 1 1 94 2 2 78 3 2 70 4 1 88 5 3 68 6 4 40 7 8 30 8 3 60 Compute the sample covariance.

a. -0.915 b. 2.268 c. 22.168 d. -46 e. None of these responses

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orchestra answered 2 years ago
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