Sharp EL-9900 operation manual 168

Chapter 10: Statistics & Regression Calculations

3.Press 'E}to

select ∝ < ∝0 and press

E.

4.Move the cursor pointer to ∝0 and input 65 and press

E.

5.Set the List to L1 and press E.

6.Press @h. Answers are displayed on the screen, where t is the t statistic for the test, p is the p value for the test and sx indicates sample standard deviation.

• If there is no weight list, the Freq field can remain empty.

04 Ttest2samp Tests two sample means, ∝1 and ∝2.

Example

Test the following two samples;

List 1 {2.37, 2.51, 2.43, 2.28, 2.46, 2.55, 2.49}

List 2 {2.63, 2.71, 2.56, 2.61, 2.55, 2.68, 2.42, 2.48, 2.51, 2.65}

1.Enter the above data into lists L1 and L2, respectively.

2.Press SE0 4.

The parameter input screen will appear.

3.Enter the appropriate value into each field.

If no Freq specification data is input, an initial Freq value of 1 is used.

*Pooled is prediction for

unknown σ1, σ2.

Select “No” if σ1, σ2, are subjectively unequal. Select “Yes” if σ1, σ2, are equal.

Calculation is executed using this prediction as the basis.

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