What is the dependent variable in the following statement? “If people are put in groups, then they will be less likely to help a stranger than when they are by themselves.”

What type of statistics is used to organize and describe the characteristics of a collection of data?

Name and define one technique/strategy that you would use to control extraneous variables in your study. Be sure to identify which strategy you would use (1 point), and how you would apply it in this specific example (1 point). 

Dawn chose to use college students as her participants because most past research does as well. Dawn used _______ in choosing her participants.

A web designer is investigating the user-friendliness of three website homepages. Participants interact with the three different layouts. They then report on their user satisfaction.   Which type of independent variable (IV) is being used in this study?

How does randomization work to control extraneous variables?

Which of the following is NOT one of the techniques to control extraneous variables?

An education researcher randomly assigns 3 different teaching strategies to 3 classrooms: traditional lectures, problem-based learning, or flipped classrooms. Students test scores in these classes are then collected and compared after 1 semester. Which type of independent variable (IV) is being used in this study?

Order: meperidine 75 mg and atropine 0.3 mg IM preoperatively. Labels: Demerol (meperidine) 100 mg/2 mL, Atropine 0.4 mg/mL. The nurse will administer the medications in a single injection. a) How many mL of each medication will the nurse administer?   b) How many total mL will be in the syringe?

Successful rearrangements at both heavy-chain alleles could result in a B cell producing two receptors of different antigen specificities. What is one way through which the pre-B-cell receptor promotes heavy-chain allelic exclusion?