Question

The central tendency score that splits the distribution into two equal sized groups:

a. median

b. mean

c. mode

d. standard deviation

e. variance

Dr. Dramatic wants to show participants three different videos while recording their skin conductance. How many possible video orders can be counterbalanced?   

  

   Identify the primary methodological difference (i.e., what the researcher does) between an experiment and a correlational study.   

Answer 1

Median is a measure of central tendency that divides the distribution into two equal-sized groups


Counterbalancing is a technique to resolve order effects in which different participants are shown in a different order
There are 3 videos, so the number of possible six different orders
Let the three videos be named as A, B, and, C
So, With these three different videos, there would be six different orders (ABC, ACB, BAC, BCA, CAB, and CBA),
so some participants would be shown in each of the six cases

In correlational studies, we look for associations among naturally occurring variables without interfering with the variables. While in an experiment, we group subjects and apply some treatment to one group and leave another group without treatment and then analyze the results. One of the major goals of conducting an experiment is to check for a causal effect between the two variables