A study conducted by students in an AP Psychologyclass at South Kent School in Connecticut discovereda correlation of –0.38 between hours of sleep (x) andGPA (y). If we change the variable on the horizontal axisto hours awake (24 - x), but make no change to theGPA data, which of the following would be true aboutthe new scatterplot?A) It slopes down, and the correlation is -0.38.B) It slopes down, and the correlation is +0.38.C) It slopes up, and the correlation is -0.38.D) It slopes up, and the correlation is +0.38.E) None of the above choices is correct.(Source: http://www.cardinalnewsnetwork.org/south-kent-community/sleep-study-sks-style/)
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
A study conducted by students in an AP Psychology
class at South Kent School in Connecticut discovered
a
GPA (y). If we change the variable on the horizontal axis
to hours awake (24 - x), but make no change to the
GPA data, which of the following would be true about
the new
A) It slopes down, and the correlation is -0.38.
B) It slopes down, and the correlation is +0.38.
C) It slopes up, and the correlation is -0.38.
D) It slopes up, and the correlation is +0.38.
E) None of the above choices is correct.
(Source: http://www.cardinalnewsnetwork.org/
south-kent-community/sleep-study-sks-style/)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
