To enter the Statistics application, highlight the app using the directional keys. Press the ok key to enter the application. This application allows you to study single variable data sets and view statistical values relevant to your set: mean, standard deviation, minimum or maximum and more. You may also view graphical representations of your data with boxplots, histograms, cumulative relative frequncy graphs and normal probablity plots.
You must first enter your data into the table. You may add up to 3 data tables.
When you begin entering data in the Value VI column, the Frequency N1 column is automatically filled with the value , indicating the value appears only once in the set. If the value appears more than once in your data set, you can enter the same value multiple times or change the frequency in the second column.
For example, consider the following data set: , , , , , , , , .
To enter this statistical data in the table:
| Value V1 | Frequency N1 |
|---|---|
After entering your data in the Data tab, you may view a graphical representation of your data. To view a graph:
You can view your data using the following graphical representations:
After entering your data in the Data tab, you can display the statistics: mean, standard deviation, median, etc. To view the statistics:
You can now view all statistics available for your data set.
To delete a row from a data table:
To change a value, highlight the desired cell and enter a new value with the numerical keys.
You may clear an entire column from any data table. Clearing the Value V1 column also clears the Frequency N1 column. Clearing the Frequency N1 column will fill each cell in the column with the value . To clear an entire column from a data table:
You can also clear a column by pressing the del key when a column name is highlighted.
You may fill a column of a data table using a formula. To fill a column with a formula:
V1/2 in the editing field at the bottom of the screen.You can re-evaluate or edit the formula by returning to the Fill with formula option.
You may sort a list in a data table by increasing values. This classification affects the column associated with the list (Value or Frequency).
You may view a column of cumulative frequencies for your data set. To view cumulative frequencies:
You may hide a data set so that it does not appear in the graphs or summary statistics. To hide a data set:
When a data set is hidden, the table and its values will be gray.
To show a hidden data set, repeat the steps above to toggle back on the option.
You can view your data with a boxplot, histogram, cumulative relative frequncy graph or normal probability plot. To select a graphical representation:
Once a graph is selected, you can return to the graph selection menu by selecting the Type menu.
When viewing data with a histogram, you will see the interval, frequency and relative frequency in the banner at the bottom of the screen for each bin.
To navigate between the bins in the histogram, use the leftright keys.
To navigate between data sets, use the updown keys.
You may change the width and starting value of the histogram bins. To do this:
When viewing data with a boxplot, the banner at the bottom of the screen will display a value of the 5-number summary. These values include:
To navigate between statistics, use the leftright keys.
To navigate between data sets, use the updown keys.
By default, outliers will automatically be displayed as individual points on the boxplot. To disable outliers:
When viewing data with a cummulative relative frequency graph, the banner at the bottom of the screen will display a value and its cumulative relative frequency.
To navigate through values, use the leftright keys.
To navigate between data sets, use the updown keys.
When viewing the cumulative frequency plot, use the numerical keys to input a value and jump to the point on the graph.
When viewing data with a normal probability plot, the banner at the bottom of the screen will display a value and its expected z-score.
To navigate through values, use the leftright keys.
To navigate between data sets, use the updown keys.
The Stats tab displays the statistics calculated using the data entered in the Data tab. The full name of the descriptive statistic is listed along with a symbol: