﻿ PROB function

# PROB function

Returns the probability that values in a range are between two limits. If upper_limit is not supplied, returns the probability that values in x_range are equal to lower_limit.

Syntax

PROB(x_range,prob_range,lower_limit,upper_limit)

X_range     is the range of numeric values of x with which there are associated probabilities.

Prob_range     is a set of probabilities associated with values in x_range.

Lower_limit     is the lower bound on the value for which you want a probability.

Upper_limit     is the optional upper bound on the value for which you want a probability.

Remarks

• If any value in prob_range ≤ 0 or if any value in prob_range > 1, PROB returns the #NUM! error value.

• If the sum of the values in prob_range is not equal to 1, PROB returns the #NUM! error value.

• If upper_limit is omitted, PROB returns the probability of being equal to lower_limit.

• If x_range and prob_range contain a different number of data points, PROB returns the #N/A error value.

Example

The example may be easier to understand if you copy it to a blank worksheet.

How to copy an example

1. Create a blank workbook or worksheet.

2. Select the example in the Help topic.

Note   Do not select the row or column headers.

Selecting an example from Help

3. Press CTRL+C.

4. In the worksheet, select cell A1, and press CTRL+V.

5. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

 1 2 3 4 5
 A B x Probability 0 0.2 1 0.3 2 0.1 3 0.4 Formula Description (Result) =PROB(A2:A5,B2:B5,2) Probability that x is 2 (0.1) =PROB(A2:A5,B2:B5,1,3) Probability that x is between 1 and 3 (0.8)

Applies To: Excel 2007

﻿