Question: Datacrackers, Inc., generated preliminary data from a clients process as found in Prob04-05 in spreadsheet Ch04Data.xlsx on the Student Companion Site. a. Apply the Excel
Datacrackers, Inc., generated preliminary data from a client’s process as found in Prob04-05 in spreadsheet Ch04Data.xlsx on the Student Companion Site.
a. Apply the Excel Descriptive Statistics tool to compute the mean, standard deviation, and other relevant statistics, and interpret the results in a meaningful fashion.
b. Use the Frequency Distribution and Histogram Excel template to construct a frequency distribution and histogram for the data. From what type of distribution might you suspect the data are drawn? Experiment with the number of cells to create a visually appealing histogram and use the Excel Histogram tool to verify the results. Interpret your results from parts a. and b. for managerial purposes
| Datacrackers, Inc. | |||||||||||||||||||
| Note: The Histogram macro and the Descriptive Statistics macro have been used to develop this solution. | |||||||||||||||||||
| They can be loaded into the Data menu during standard setup of Excel. | |||||||||||||||||||
| If available, they will show up as the Data Analysis label on the Data menu. | |||||||||||||||||||
| SORTED | |||||||||||||||||||
| DATA | |||||||||||||||||||
| 1 | 1.7 | Upper Cell | Cumulat. | Original Data set | |||||||||||||||
| 2 | 1.7 | Boundaries | Frequencies | Freq. | Cumulative % | ||||||||||||||
| 3 | 1.9 | Cell 1 | 1.5 | 0 | 0 | 0.01 | 38.1 | 38.5 | 38.3 | 37.3 | 38.4 | 39.2 | 38.9 | 38.7 | 39.0 | 38.6 | |||
| 4 | 1.9 | Cell 2 | 2.0 | 5 | 5 | 0.04 | 38.1 | 38.5 | 38.4 | 37.6 | 38.4 | 39.2 | 38.9 | 38.7 | 39.0 | 38.6 | |||
| 5 | 2.0 | Cell 3 | 2.5 | 9 | 14 | 0.12 | 38.2 | 38.5 | 38.4 | 37.7 | 38.4 | 39.3 | 38.9 | 38.7 | 39.1 | 38.7 | |||
| 6 | 2.3 | Cell 4 | 3.0 | 9 | 23 | 0.38 | 38.2 | 38.5 | 38.4 | 37.8 | 38.4 | 39.3 | 38.9 | 38.7 | 39.1 | 38.7 | |||
| 7 | 2.4 | Cell 5 | 3.5 | 20 | 43 | 0.67 | 38.3 | 38.6 | 38.4 | 37.9 | 38.4 | 39.3 | 38.9 | 38.7 | 39.1 | 38.7 | |||
| 8 | 2.4 | Cell 6 | 4.0 | 31 | 74 | 0.82 | 38.3 | 38.6 | 38.4 | 37.9 | 38.4 | 39.4 | 39.0 | 38.7 | 39.1 | 38.7 | |||
| 9 | 2.4 | Cell 7 | 4.5 | 14 | 88 | 0.95 | 38.3 | 38.6 | 38.4 | 37.9 | 38.4 | 39.4 | 39.0 | 38.7 | 39.1 | 38.7 | |||
| 10 | 2.5 | Cell 8 | 5.0 | 11 | 99 | 0.99 | 38.3 | 38.6 | 38.4 | 38.1 | 38.4 | 39.5 | 39.0 | 38.8 | 39.1 | 38.7 | |||
| 11 | 2.5 | Cell 9 | 5.5 | 1 | 100 | 1 | 38.3 | 38.6 | 38.4 | 38.1 | 38.5 | 39.6 | 39.0 | 38.8 | 39.2 | 38.7 | |||
| 12 | 2.5 | 38.3 | 38.6 | 38.4 | 38.1 | 38.5 | 39.9 | 39.0 | 38.8 | 39.2 | 38.7 | ||||||||
| 13 | 2.5 | ||||||||||||||||||
| 14 | 2.5 | Descriptive Statistics | |||||||||||||||||
| 15 | 2.6 | ||||||||||||||||||
| 16 | 2.6 | Mean | 3.5910 | ||||||||||||||||
| 17 | 2.7 | Standard Error | 0.0809 | ||||||||||||||||
| 18 | 2.8 | Median | 3.6500 | ||||||||||||||||
| 19 | 2.8 | Mode | 3.6000 | ||||||||||||||||
| 20 | 2.9 | Standard Deviation | 0.8088 | ||||||||||||||||
| 21 | 3.0 | Sample Variance | 0.6542 | ||||||||||||||||
| 22 | 3.0 | Kurtosis | -0.2919 | ||||||||||||||||
| 23 | 3.0 | Skewness | -0.2404 | ||||||||||||||||
| 24 | 3.1 | Range | 3.6000 | ||||||||||||||||
| 25 | 3.1 | Minimum | 1.7000 | ||||||||||||||||
| 26 | 3.1 | Maximum | 5.3000 | ||||||||||||||||
| 27 | 3.1 | Sum | 359.1000 | ||||||||||||||||
| 28 | 3.2 | Count | 100.0000 |
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