T02-04 - 1 T02-04 Histogram (User Selected Classes) Purpose Allows the analyst to analyze quantitative data by summarizing it in sorted format, scattergram.
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T02-04 - 1 T02-04 Histogram (User Selected Classes) Purpose Allows the analyst to analyze quantitative data by summarizing it in sorted format, scattergram by observation, frequency dot plot by data value, analyst choice classifications frequency histogram and relative frequency histogram. Inputs Original Quantitative Data User Selected Histogram Bins Outputs Sorted Quantitative DataSummary Statistics Original Data ScattergramFrequency Dot Plot Frequency Histogram Relative Frequency Histogram Limitations 1000 quantitative data
T02-04 - 2 An Example A college professor has a grading scale of A+> 100 A90 to 100 B+88 to 89.99 B80 to 87.99 C+ 78 to 79.99 C70 to 77.99 D 60 to 69.99 F0 to 59.99 For the test scores shown here what is the Grade Distribution Histogram.
T02-04 - 3 An Example The grading scale must be interpreted in terms of the Bins used by the EXCEL Histogram Data Analysis Tool. They must be arranged from smallest to largest. F 0 to 59.99 D 60 to 69.99 C70 to 77.99 C+ 78 to 79.99 B80 to 87.99 B+88 to 89.99 A90 to 100 A+> 100 EXCEL Histogram Bins 0 59.99 69.99 77.99 79.99 87.99 89.99 100
T02-04 - 4 Data can either be entered directly into the Original Data cells or copy/paste special/values into the cells.
T02-04 - 5 Once the data is entered Summary Statistics ( Count, Max, Min & Range ) are automatically calculated. The Sort Macro can be run to sort the Original Data into the Sorted Data cells. This also automatically calculates the necessary information for the Dot Plot.
T02-04 - 6 The Histogram Bins are entered here. The Histogram Macro can be run to automatically calculate the Histogram Frequency Information.
T02-04 - 7 The Histogram Frequency Information is displayed along with an interpretation of the “hard to read” EXCEL output (e.g. the number of data observations greater than 89.99 and less than or equal to 100 is 5).
T02-04 - 8 Worksheet Tabs can be selected to view the Original Data Scattergram, Frequency Dot Plot & User Selected Classes Histogram.
T02-04 - 9 The Scattergram displays a plot of the observations in the sequence they were entered.
T02-04 - 10 The Dot Plot displays a frequency plot of the observations.
T02-04 - 11 The Frequency Histogram shows the histogram for the chosen User Selected Classes. The legend should be read bottom-up.