Question

Problem Set 7.1: t Test with Related Samples

Criterion: Differentiate between independent samples, repeated measures, and matched samples.

Data:

Scenario A: A researcher wants to know whether men or women spend more money at the movie concession stand. He asks the concession clerk to identify customers as male or female by marking their gender on each saved receipt.

Scenario B: A CPR instructor wants to know if her students are learning anything during her 90-minute training. She decides to quiz her students at the beginning of class and again at the end of class.

Instruction: For each of the two scenarios, identify whether independent samples, repeated measures, or matched samples would be used. Explain how you can make the determination.

Answer 1

Scenario A: it's a t test for independent samples because men and women are independent of each other.

Scenario B : its a matched pair t test because both the samples are same before and after the training.