Sharp EL9900C EL-9900C - Page 178

168

Chapter 10: Statistics & Regression Calculations

3. Press

'

E

}

to

select

µ

<

µ

0

and press

E

.

4.

Move the cursor pointer to

µ

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,

µ

1

and

µ

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

S

E

0

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

σ

1

,

σ

2

.

Select “No” if

σ

1

,

σ

2

, are subjectively unequal.

Select “Yes” if

σ

1

,

σ

2

, are equal.

Calculation is executed using this prediction as the basis.

Sharp EL9900C EL-9900C - Page 178

Ttest2samp, Example

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