Line graphs are used when the independent variable is measured in a dichotomous way.

Select one:

True

False

Descriptive statistics refers to the ways a researcher summarizes and displays/reports their data.

Select one:

True

False

To measure the cause and effect of 2 variables where one is numerical and the other dichotomous, you use point-biserial correlation as the null hypothesis test.

Select one:

True

False

You have a distribution of the calculus mid-term exam. Unfortunately, the majority of students barely passed with the exception of two students, who received perfect scores. If you were to graph the calculus mid-term exams in a histogram, what would the distribution look like?

a.

normal distribution

b.

skewed

c.

positively skewed

d.

negatively skewed In Professor Awesome's Introduction to Psychology class, the majority of students have an average grade in the 90s and 80s. There were a handful receiving Cs, and one student who is failing. This one student did not submit any assignments and failed their mid-term exam. If the grades were put in a histogram, what would the shape of the distribution look like?

a.

skewed

b.

normal distribution

c.

negatively skewed

d.

positively skewed

You have the following data:

4, 3, 0, 1, 1, 2, 1, 0

What is the mode? Olga wanted to test whether cranial massages significantly reduce tension headaches by 10%. She charted patients who were already enrolled in the cranial massage program and compared their pain levels to patients who were taking medication only for their tension headaches. By the end of the year, she looked at their reported pain levels.

Whether one is going through the cranial massage program or not is which type of variable?

a.

dependent variable

b.

independent variable

c.

extraneous variable

d.

level Julianna wants to compare which recently released movie is rated as "most enjoyable." Within a span of a week, she had each participant watch "Woman King", a day later "Black Panther 2: Wakanda Forever," and a day after that "Black Adam." At the end of the week, each participant completed a survey questionnaire. After collecting her data, she used SPSS for data analysis. Which null hypothesis test would be the most appropriate to use? Jack is interested to see whether salary of professors was different depending on whether they were in the social sciences or biomedical sciences (e.g., biology, chemistry, etc.). To analyze his data, he needs to use which null hypothesis test? You have a distribution of the calculus mid-term exam. Unfortunately, the majority of students barely passed with the exception of two students, who received perfect scores. These perfect scores (100%) would be considered which type of score?