T-Test

The T-Test can be used to...

• check the normal distribution of a provided dataset

• calculate the relationship between two independent variables

• compare the means of two datasets of a group or two

• measure the spreads of a group of given numbers

When we have two different groups of students, the means can be compared using...

• Single/One sample t-test

• Independent/unpaired t-test

• Dependent/paired sample t-test

If we have a group of students, the means of pre-test and post-test of the students can be compared using...

• Single/One sample t-test

• Independent/unpaired t-test

• Dependent/paired sample t-test

If we only have data on the population, then we find data of the sample from the population, and we can calculate the t-test using...

• Single/One sample t-test

• Independent/unpaired t-test

• Dependent/paired sample t-test

Which of the following are the null hypotheses?

• There is a difference between the means of the two variables.

• There is no difference between the means of the two variables.

• There is no relationship between the two variables.

• There is relationship between the the two variables.

If N=100, then the degree of freedom (df) of the critical t-table is...

• 0.05

• 99

• 5%

• 0

The T-Test can only be used if the data use the following scale, except...

• nominal scale

• ratio scale

• ordinal scale

• interval scale

Which of the following are assumptions of the T-Test?

• The sample must be distributed normally.

• The variance of the sample must not be homogen.

• The scales are interval, ratio, and ordinal.

• The participants in the sample must be equal.