How to Calculate Class Interval?

Answer Any data set accumulated for statistical purposes, such as the U.S. census, contains information that needs to be summarized and aggregated. It'd be impossible to list the attributes such as income... Read More »

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How to Calculate Confidence Interval?

A confidence interval is an indicator of your measurement's precision. It is also an indicator of how stable your estimate is, meaning that if you repeat your survey, your result will be close to y... Read More »

How do I Calculate the Prediction Interval with a TI-86?

Prediction intervals show a statistician where they believe predictive values will fall with a group of data. The TI-86 calculator is a graphing calculator with statistical formulas programmed into... Read More »

How to Calculate 95% Confidence Interval for a Test's Sensitivity?

The sensitivity of a test is the percentage of individuals with a particular disease or characteristic correctly identified as positive by the test. Tests with high sensitivity are useful as screen... Read More »

How Do I Calculate Class Width?

A frequency distribution is a table of data detailing the frequency with which certain characteristics appear in a sample population. For example, you could make a frequency distribution of the hei... Read More »