What is the variable of interest in this data set and what is the type of this variable?

If the correlation between variable X and variable Y is perfect, what do you know about the prediction?

One study found a positive correlation between years of education and yearly income. Which fact would lead you to believe that the relationship between years of education and yearly income is one of causation and not correlation?

Define the term Sample Correlation? why it is used in linear equation?

Find the variance of these data 20,30,15, 18,22 (2 Points)

Describe the range of values for the correlation coefficient.

Define the term relationship as a perfect positive cross-correlation?

True or false - The number of languages a person can speak is a nominal variable, therefore we cannot calculate its median.

pls help! Cell phone production engineers have noticed that among a group of 138 customers aged 14-23 who send more text messages tend to use a higher percentage of their phone’s memory. What are the explanatory variable and response variable for this relationship? Explanatory variable: age of customerResponse variable: percentage of phone memory used Explanatory variable: percentage of phone memory usedResponse variable: age of customer Explanatory variable: number of text messages sentResponse variable: percentage of phone memory used Explanatory variable: percentage of phone memory usedResponse variable: number of text messages sent

How is correlation defined?

what does it means that the variable are positively correlated?

Explain correlation and its importance.

Which of the following sets of data represent valid functions? OR = {(– 5,0), (2, 3), (6, 4), (8, 9), (15, 14)} OG = {(– 5, – 3), (2, 1), (2, 4), (8, 7), (15, 13)} OS = {(– 5, – 4), (2, 3), (6, 5), (7, 9), (11, 16)} OF = {(– 4, – 1), (3, 2), (5, 4), ( – 4, – 1), (10, 15)} - - Question Help: DVideo