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Input the first sample data in column C1 and the second in column C2 Click StatClick Basic Statistics Click 2- Sample t... Click Samples in different columns.

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Presentation on theme: "Input the first sample data in column C1 and the second in column C2 Click StatClick Basic Statistics Click 2- Sample t... Click Samples in different columns."— Presentation transcript:

1 Input the first sample data in column C1 and the second in column C2 Click StatClick Basic Statistics Click 2- Sample t... Click Samples in different columns Input First =C1, Second = C2 Alternative = nature of H1 (in our case, greater than) Input Confidence Level =(1 α) × 100 (95.0 in our case) If we assume that population variances are equal, then select Assume equal variance. (In our example, we do not select this.) Click OK Chart 11-1: Minitab Difference Between 2 Population Means

2 Input the sample data 1 in column A and the Sample data 2 in column B Click Tools Click Data Analysis Click t-Test: Two-Sample Assuming Unequal Variances (If we know that the two population variances are equal, choose Two-Sample Assuming Equal Variances.) Click OK Input Variable 1 Range = range of sample data 1 in column A, Variable 2 Range = range of sample data 2 in column B Input Hypothesized Mean Difference = test value of (μ 1 μ 2 ) (In our case, 60) Input Alpha = value of level of significance (In our case, 0.05) Click OK Chart 11-2: Excel Difference Between 2 Population Means

3 Input the two sample data in two columns of the worksheet Click StatClick Basic Statistics Click Paired t Click Options Input Confidence Level =(1 )×100 (95.0 in our case) Input Test mean = test value of (µ 1 µ 2 ) ( = 0 in our case) Input Alternative = nature of H 1 (in our case, less than) Click OK Input names of columns containing first sample, and second sample in appropriate place Click OK Chart 11-3: Minitab Paired T-Test

4 Input the sample data Click Tools, Data Analysis Click t-Test: Paired Two Sample for Means Input data range for Variables 1 and 2 Input Hypothesized Mean Difference = test value of (µ 1 µ 2 ) ( = 0 in our case) Input Alpha = value of level of significance ( = 0.05 in our case) Click OK Chart 11-4: Excel Paired T-Test


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