STATISTICAL TECHNIQUES AND TOOLS
SPSS AND STATISTIC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Means
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Compare mean
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Frequencies
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Crosstabs
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Detailed explanation-1: -T-tests are used to compare the mean scores of two groups of people or conditions. There are two types of t-tests: Independent-samples t-test: compare the mean scores of two different groups of people or conditions. Paired-samples t-test: compare the mean scores for the same group of people on two different occasions.
Detailed explanation-2: -The two-sample t-test (Snedecor and Cochran, 1989) is used to determine if two population means are equal. A common application is to test if a new process or treatment is superior to a current process or treatment. There are several variations on this test. The data may either be paired or not paired.
Detailed explanation-3: -t – This is the Student t-statistic. It is the ratio of the difference between the sample mean and the given number to the standard error of the mean: (52.775 – 50) / .
Detailed explanation-4: -To run an Independent Samples t Test in SPSS, click Analyze > Compare Means > Independent-Samples T Test. The Independent-Samples T Test window opens where you will specify the variables to be used in the analysis.