Calculate Std Dev, Variance, & Median in LibreOffice Calc

LibreOffice Calc provides powerful built-in statistical functions that allow you to analyze datasets quickly and accurately. This guide explains how to calculate standard deviation, variance, and median in LibreOffice Calc using straightforward formulas and step-by-step instructions.

1. Calculating the Median

The median represents the middle value in a sorted dataset, separating the higher half from the lower half.

• Function: =MEDIAN(range)
• Example: =MEDIAN(A1:A20)

Steps:

1. Click the cell where you want the median to appear.
2. Type =MEDIAN( followed by the range of cells containing your numbers (e.g., A1:A20).
3. Close the parenthesis ) and press Enter.

2. Calculating the Variance

Variance measures the degree of spread in your data points relative to the mean. Depending on your dataset, you can calculate sample variance or population variance.

Sample Variance (Most Common)

Use this if your data represents a sample drawn from a larger population.

• Function: =VAR(range) or =VAR.S(range)
• Example: =VAR(A1:A20)

Population Variance

Use this if your data represents the entire population.

• Function: =VARP(range) or =VAR.P(range)
• Example: =VARP(A1:A20)

Steps:

1. Select the destination cell.
2. Enter =VAR(A1:A20) for a sample or =VARP(A1:A20) for a full population.
3. Press Enter.

3. Calculating the Standard Deviation

Standard deviation is the square root of the variance, expressing data dispersion in the same units as the original values.

Sample Standard Deviation (Most Common)

Use this when working with a sample of a population.

• Function: =STDEV(range) or =STDEV.S(range)
• Example: =STDEV(A1:A20)

Population Standard Deviation

Use this when working with the complete dataset representing an entire population.

• Function: =STDEVP(range) or =STDEV.P(range)
• Example: =STDEVP(A1:A20)

Steps:

1. Select the destination cell.
2. Type =STDEV(A1:A20) for sample data or =STDEVP(A1:A20) for population data.
3. Press Enter.

Alternative: Using the Function Wizard

If you prefer a graphical interface instead of typing formulas manually:

1. Select the target cell.
2. Click the Function Wizard icon (\(f(x)\)) on the formula bar or press Ctrl + F2.
3. Set the Category dropdown to Statistical.
4. Double-click MEDIAN, VAR, or STDEV.
5. Select or type your cell range in the parameter field.
6. Click OK to apply the formula.