Quiz 1

When would you use a One-Sample T-Test?

• To compare means from the same group at different times

• To compare means between three or more groups

• To compare a sample mean to a predetermined mean

• To compare means for two different groups

Which parametric test is appropriate for comparing the means of more than two groups?

• One-Sample T-Test

• Independent T-Test

• Paired T-Test

• ANOVA

If an ANOVA test shows a significant result/difference, what would be the next appropriate step?

• Conduct another ANOVA test

• Perform a post-hoc analysis

• Assume all groups differ significantly

• All of the above

What is the general null hypothesis for an Independent T-Test?

• The sample mean is equal to the predefined mean

• There is no difference in means between two groups

• The means of all groups are not equal

• None of the above

Which statistical test is appropriate to use when the data follows a normal distribution curve?

• Non-Parametric Test

• Parametric Test

TRUE OR FALSE:

If the p-value = 0.03, we failed to reject the null hypothesis.

• TRUE

• FALSE

TRUE OR FALSE:

If the p-value = 0.4, we reject the null hypothesis

• TRUE

• FALSE

What type of data do economic class, movie ratings, and rankings represent?

• Ordinal Data

• Continuous Data

• Nominal Data

A researcher wants to compare the effectiveness of three different teaching methods (Lecture-Based, Group Discussion, and Online Learning) on students' test scores. They randomly assign students to one of the three teaching methods and administer the same test after the instruction period. The test scores are collected, and the researcher wants to determine if there is a significant difference in the mean scores among the three groups. Which appropriate parametric test should be used?

• One-Sample T-Test

• Dependent/Paired Sample T-Test

• Independent Sample

  T-Test

• ANOVA

A fitness coach wants to evaluate the effectiveness of a new workout program. They measure the body fat percentage of 20 participants before starting the program and again after 8 weeks of following the program. The coach wants to determine if there is a significant change in the participants' body fat percentages. Which appropriate parametric test should be used?

• One-Sample T-Test

• Dependent/Paired

  T-Test

• Independent T-Test

• ANOVA