Microsoft EXCEL Basics Lesson 13 Working With Built In Functions Descriptive Statistics - 2 Excel Built In Functions - 3 Paste Function (Built In Functions) - 6 Paste Function Dialogue Box - 7 Built In Statistical Functions - 12 Generalized Built In Formula - 16 Harland E. Hodges, Ph.D., College of Charleston, School of Business, Office 306 JC Long

Numerical Descriptive Statistics In statistical analysis, we are often concerned with developing statistics which numerically describe data. For example, the average, standard deviation, and variance. We all are familiar and perhaps even remember some of these formula.

Excel Built In Functions The developers of Excel recognized the need to be able to calculate formula like these and created built in functions to handle these calculations. In addition, they created built in functions to handle many other common formulas such as . Financial . Date & Time . Mathematical & Trigonometric . Statistical . Lookup & Reference . Database . Logical . Etc.

Numerical Descriptive Statistics We will use multiple numbers (e.g. sample data) in this course. These sample data can be arranged in a sequence (usually in a column) Let’s compute the 4 descriptive statistics for these 10 numbers. . Count . Average . Variance . Standard Deviation We all know how to calculate these statistics using a calculator. But let’s look at how quickly we can do it with Excel without looking up a formula we may have forgotten.

First, set up this format in your Excel spreadsheet First, set up this format in your Excel spreadsheet. We will use the green cells for input and the blue cells for the result of our formula for each descriptive statistic.

Let’s do the Count formula first. Left click cell F4, then left click the (Paste Function) button on the Standard Toolbar

Note:. An = sign automatically. comes up in cell F2. This is Note: An = sign automatically comes up in cell F2. This is where the results of our built in formula will appear. This brings up the Paste Function Dialogue Box where you can see the many types of built in functions that are available to us.

The Paste Function Dialogue Box Scroll We can scroll through the Function Categories and Function Names independently using the scrolling bars. The Paste Function Dialogue Box is divided into two parts. On the left is the Function Category and on the right is the Function Name.

The Paste Function Dialogue Box The Function Category represents all of the different types of common formula that are built in functions in Excel.

The Paste Function Dialogue Box The Function Name represents all of the different built in functions for the selected Function Category.

The Paste Function Dialogue Box The bottom of the Paste Function Dialogue Box describes the built in function along with its format. In this example, NPER is one of the Most Recently Used functions and calculates the financial formula for the number of periods …

Left click Statistical, scroll through the Function Names, left click COUNT, OK (COUNT is the Excel built in function to count non-void cells)

Note:. A blinking dotted line appears around the green cells Note: A blinking dotted line appears around the green cells (C4:C13), and the green cells (C4:C13) appear in the Value 1 portion of the COUNT dialogue box. You may need to move the COUNT dialogue box away from the data (hold left mouse button down on box while dragging it to this position). Hilight green cells, OK

Note:. The result in cell F4 is 10. which is the COUNT of the Note: The result in cell F4 is 10 which is the COUNT of the number of non-void green cells (C4:C13). The formula pasted in cell by the previous actions is =COUNT(C4:C13). Repeat this procedure for the . Average ( , Statistical, AVERAGE) . Variance ( , Statistical, VAR) . Standard Deviation ( , Statistical, STDEV). Set the decimal place accuracy for this output to 2.

Use your calculator to verify that these calculations are correct and then save this as F07-Built In Functions.

Numerical Descriptive Statistics We learned earlier that once we create a formula we can then use it at a later date. The same is true for built in functions. Use the previously developed spreadsheet F07-Built In Functions to quickly calculate the following descriptive statistics for this sample. . Count . Average . Variance . Standard Deviation

Begin by Clearing the Contents of the green cells (C4:C13) Begin by Clearing the Contents of the green cells (C4:C13). In case you forgot how, hilight the cells C4:C13, left click, Clear Contents.

Now enter the 6 numbers and notice what happens to the blue cells as you enter the numbers. Quite remarkable isn’t it! If your curious, you might want to verify the calculations with a calculator. We have now created a generalized set of built in formula to handle these descriptive statistics calculations for up to 10 numbers.