'PsychSim6 Quiz: Correlation

Which of the following correlation coefficients represents the weakest negative correlation?

-0.20

Correlation coefficients can range from:

-1 to 1

Professor Andrews found that as the number of days absent increases, students grades decrease. Professor Andrews has found:

a negative correlation between days absent and grades.

Professor Hartwick finds that people who tend to score low on one variable tend to score low on another variable. Professor Hartwick has found:

a positive correlation

Michael notices that the plants in his garden that are in the shade most of the day are smaller than the ones that are in the sun. What can Michael conclude about the relationship between sunlight and plant growth?

a positive correlation between amount of sunlight and plant growth.

Professor McManus shows a scatterplot of data that show that grades increase as the number of hours spent studying increases. Professor McManus has shown that:

a positive correlation between studying and grades.

A positive correlation:

indicates that as one variable increases, the other variable increases.

A downward sloping scatterplot indicates:

negative correlation.

Professor Gliserman is studying the effect of alcohol on response time. Professor Gliserman will likely find _____ between the two variables.

positive correlation

An upward sloping scatterplot indicates:

positive correlation.

The correlation coefficient is represented by:

r

Which of the following correlation coefficients would you expect to see between month of birth (1 through 12) and scores on an intelligence test?

r = -0.02

Which of the following is a correct representation of a strong negative correlation?

r = -0.82

A ______ shows two variables combined as individual points on a graph.

scatterplot

Professor Rossi wants to represent the data she collected on age and income as single points on a chart. She can accomplish this using a:

scatterplot.

Professor Zhang found a correlation of -0.76. What data could this correlation represent?

the relationship between antidepressant dose and depressive symptoms

Scatterplots show:

two scores represented as individual points on the graph.

Dr. Velasquez found a correlation of r = 0.02 in a recent study. The two variables in his study are:

uncorrelated.

If high values in one variable are associated with both high and low values of the other variables, the variables are:

uncorrelated.

Which of the following correlation coefficients may represent a strong positive correlation?

.8