Question

Use the graphing tool to create a histogram of Gretchen’s data. Use eight bins for your histogram.

Answer 1

The number of bins in the histogram determines the width of the bins and

the frequency (number of members) in a bin.

• Please find attached the graph of the histogram of Gretchen's data created with MS Excel.

Method used to create the histogram of Gretchen's data

Given:

The table from  Gretchen's data is presented as follows;

$\begin{tabular}{|c|c|} \underline{ Member}& \underline{Number of Days}\\x_1&2\\x_2&4\\x_3&7\\x_4&8\\x_5&12\\x_6&15\\x_7&10\\x_8&7\\x_9&9\\x_{10}&6\\x_{11}&13\\x_{12}&3\\x_{13}&8\\x_{14}&10\\x_{15}&10\end{array}\right]$

The required number of bins = 8 bins

The steps to create the histogram using MS Excel;

• Enter the 15 dataset for the number of days as presented in the above table in a column on the worksheet.

• Select the dataset entered into the cells from above then select the Insert menu.

• In the Chart section of the insert menu click on the Histogram icon to view the quick options for histograms type charts.

• Select the Histogram option from the drop down menu from the quick options for histograms, to create an histogram chart.

• Right-click the histogram created from the previous step, then select Format Chart Area from the pop up menu.

• In the Format Chart Area task pane, click on the arrow next to Chart Options, then select Horizontal Axis from the options menu.

• Click on the histogram icon under Axis Options, then click on arrow button besides Axis Option sub menu, to display the axis options.

• Click on the Number of bins radio button then enter 8, to create an histogram having 8 bins.

The histogram of Gretchen's data having eight bins created with MS Excel is attached.

Learn more about creating a histogram chart here:

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