Prior to Writing Program Statements That Access Data in a File

question 59

True/False

Prior to writing program statements that access data in a file, you should always check to make sure the file is available using the Available( ) method.

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Definitions:

Variance

A statistical measure of the dispersion of data points in a data set, showing how far each point in the set is from the mean and from each other.

Normal Probability Distribution

A bell-shaped curve that is symmetric about the mean, describing how the values of a variable are distributed, indicating most data falls close to the mean.

Sampling Distribution

The probability distribution of a given random-sample-based statistic.

Sample Sizes

Refers to the different quantities or numbers of observations collected from populations for various studies.