Criteria for tests concerning standard deviations.

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Presentation transcript:

Criteria for tests concerning standard deviations. Figure: 13-01a Criteria for tests concerning standard deviations.

Criteria for tests concerning standard deviations. Figure: 13-01b Criteria for tests concerning standard deviations.

Criteria for tests concerning standard deviations. Figure: 13-01c Figure: 13-01c Criteria for tests concerning standard deviations.

Figure: 13-02 Normal probability plot for Example 13.1 reproduced from display screen of TI-83 graphing calculator.

Criteria for tests concerning the equality of two standard deviations. Figure: 13-03 Criteria for tests concerning the equality of two standard deviations.