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T03-02 Calculate Descriptive Statistics With Histogram

Purpose T03-02 is an all in one template combining the features of T02-02, T02-03, T02-04, and T03-01 into a comprehensive quantitative data analysis tool. The only exception is that it does not compare the resulting relative frequency histograms to the normal relative

Inputs Original Quantitative Data Number ClassesBeginning Class Ending Class

Outputs Descriptive Statistics (Central Tendency, Variation, Shape)Original Data Scattergram Sorted Quantitative Data Frequency Dot Plot 5-Number Box PlotEqual Class Width HistogramUser Defined Classes Histogram

Limitations 1000 quantitative data

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An Example

A college professor has the test results shown here. He is interested in the producing

Summary Descriptive Statistics for Central TendencyVariationShape

He is also interested in calculating the 93rd percentile.

Also, he would like to produce an Equal Class Width Histogram (10 classifications) and Grade Distribution Histogram (ABCDF on a 10 point scale) of the data.

Original Data

18224598455845624885866848758789

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Data can either be entered directly into the Original Data cells or copy/paste special/values into the cells.

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Cell A1 allows you to set the decimal point accuracy for the Descriptive Statistics Calculations.

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Once the data is entered Sample Descriptive Statistics are automatically calculated. Scrolling through the sheet will show all the calculations.

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Scrolling down to row 17 in the spread sheet you will find the Percentile Input Cell. For the 93rd percentile, we enter .93 and the 93rd percentile is calculated automatically.

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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.

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Scrolling down to row 39 in the spread sheet you will find the Equal Width Class Histogram Input/Output information. The Histogram by # Classes Macro is run to calculate the Frequency Counts by classification.

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Scrolling down to row 60 in the spread sheet you will find the User Selected Classes Histogram Input/Output information. The Histogram by Fixed Classes Macro is run to calculate the Frequency Counts by classification.

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Worksheet Tabs can be selected to view the Original Data Scattergram, Frequency Dot Plot & 5 Number Box Plot, Histogram - # Classes, and Histogram – User Defined Classes

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The Scattergram displays a plot of the observations in the sequence they were entered.

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The Dot Plot displays a frequency plot of the observations.

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The 5 Number Box Plot (Min, Q1, Median, Q3, Max) is shown here.

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The Equal Class Width Histogram displays a graphical plot of the information on the Data Sheet Histogram Output.

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The User Defined Classes Histogram displays a graphical plot of the information on the Data Sheet Histogram Output.