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.

- In the first column (
**Value V1**), enter the values of your data set. - In the second column (
**Frequency N1**), enter the frequencies associated with each value in your data set, i.e. the number of occurrences of each value.

When you begin entering data in the **Value VI** column, the **Frequency N1** column is automatically filled with the value $1$, 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: $1$, $1$, $1$, $2$, $3$, $3$, $4$, $5$, $5$.

To enter this statistical data in the table:

Value V1 | Frequency N1 |
---|---|

$1$ | $3$ |

$2$ | $1$ |

$3$ | $2$ |

$4$ | $1$ |

$5$ | $2$ |

After entering your data in the **Data** tab, you may view a graphical representation of your data. To view a graph:

- Use the directional keys to highlight the
**Graph**tab at the top of the screen. - Confirm by pressing the
key.*ok* - Select the graph type of interest.

You can view your data using the following graphical representations:

- Histogram
- Boxplot
- Cumulative Relative Frequency Graph
- Normal Probability Plot

After entering your data in the **Data** tab, you can display the statistics: mean, standard deviation, median, etc. To view the statistics:

- Select the
**Stats**tab at the top of the screen. - Confirm by pressing
.*ok*

You can now view all statistics available for your data set.

To delete a row from a data table:

- Highlight a single cell in the row that you wish to delete.
- Press the
key. The row has been deleted.*del*

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 $1$. To clear an entire column from a data table:

- Highlight the name of the column you want to clear. For example, highlight
**Value V1**to clear the first column of the first data table. - Confirm by pressing the
key. The column options menu will open.*ok* - Highlight
**Clear table V1/N1**. - Confirm with the
key. The column has been cleared.*ok*

You can also clear a column by pressing the

key when a column name is highlighted.del

You may fill a column of a data table using a formula. To fill a column with a formula:

- Highlight the name of the column you wish to fill. For example, highlight
**Value V2**. - Confirm by pressing the
key.*ok* - The column options menu opens. Highlight
**Fill with a formula**. - Confirm with the
key.*ok* - Select a list function from the templates or use the
**Empty**template to create your own. - You can also enter a formula using the name of another column. For example, if you would like column
**Value V2**to be filled with the values of**V1**divided by 2, use the Empty template and write`V1/2`

in the editing field at the bottom of the screen. - Confirm with the
key.*ok*

You can re-evaluate or edit the formula by returning to the

Fill with formulaoption.

You may sort a list in a data table by increasing values. This classification affects the column associated with the list (**Value** or **Frequency**).

- Highlight the name of the column you would like to sort.
- Confirm with the
key.*ok* - The column options menu opens. Highlight
**Sort**. - Confirm with the
key. The items of your list have been sorted.*ok*

You may view a column of cumulative frequencies for your data set. To view cumulative frequencies:

- Highlight the name of the column for which you would like to see the cumulative frequencies.
- Confirm with the
key.*ok* - The column options menu opens. Highlight
**Cumulative frequencies**. - Press the
key to toggle on the option.*ok* - Press the
key to return to the Data tab and view the column of cumulative frequencies.*back*

You may hide a data set so that it does not appear in the graphs or summary statistics. To hide a data set:

- Highlight the name of the column you would like to hide.
- Confirm with the
key.*ok* - The column options menu opens. Highlight
**Show in Graphs and Stats**. - Press the
key to toggle off the option.*ok* - Press the
key to return to the Data tab.*return*

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:

- Use the directional keys to highlight the
**Graph**tab at the top of the screen. - Confirm by pressing the
key.*ok* - Select the graph type of interest.

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 *left*** right** keys.

To navigate between data sets, use the *up*** down** keys.

You may change the width and starting value of the histogram bins. To do this:

- Highlight the Settings menu and press the
key.*ok* - The histogram settings menu opens. Enter the values for the
**Bin width**and**X start**. - Highlight
**Confirm**and press thekey.*ok*

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:

- Minimum
- First quartile
- Median
- Third quartile
- Maximum

To navigate between statistics, use the *left*** right** keys.

To navigate between data sets, use the *up*** down** keys.

By default, outliers will automatically be displayed as individual points on the boxplot. To disable outliers:

- Highlight the Settings menu and press the
key.*ok* - The boxplot settings menu opens. Highlight
**Display outliers**. - Press the
key to toggle off the option.*ok* - Press the
key to return to the boxplot.*back*

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 *left*** right** keys.

To navigate between data sets, use the *up*** down** 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 *left*** right** keys.

To navigate between data sets, use the *up*** down** 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:

- Number of data points:
**n** - Minimum:
**Min** - First quartile:
**Q1** - Median:
**Med** - Third quartile:
**Q3** - Maximum:
**Max** - Range:
**R** - Interquartile range:
**IQR** - Mean:
**µ** - Standard deviation:
**σ** - Variance:
**σ2** - Sample mean:
**x̄** - Sample standard deviation:
**s** - Sample variance:
**s2** - Sum of values:
**Σx** - Mode:
**Mod** - Mode frequency:
**Modf**