The following data was collected on the number of billboards along the I-76 in a given...
The following data was collected on the number of billboards along the I-76 in a given week: 5, 8, 10, 13, 7, 9, 10, 11, 8, 9 a. Calculate the sample mean b. Calculate the sample median c. Calculate the range d. Calculate the sample standard deviation e. Calculate the z-score for the first observation. Is it an outlier? f. Based on the Empirical Rule, 95% of the data should lie between what two numbers? g. Use any software to create a histogram of this data. 15
Homework Answers
calculations for part (d)
| data | data-mean | (data - mean)2 |
| 5 | -4 | 16 |
| 8 | -1 | 1 |
| 10 | 1 | 1 |
| 13 | 4 | 16 |
| 7 | -2 | 4 |
| 9 | 0 | 0 |
| 10 | 1 | 1 |
| 11 | 2 | 4 |
| 8 | -1 | 1 |
| 9 | 0 | 0 |
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The following data was collected on the number of billboards
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