If the equation for the regression line is y1=-8x+3 , then the slope of this line is a.3 b.6 c.-5 d.-8

Q: Different hotels in a certain area are randomly​ selected, and their ratings and prices were…

A: Linear regression equation:In a linear regression model y = b0 + b1x, where y be the response…

Q: Suppose the linear regression line y = 2.1x+ 130 predicts sales based on the money spent on…

A:

Q: The table shows the amounts of crude oil (in thousands of barrels per day) produced by a certain…

A: Given: y^=-1.298x+16829.94

Q: Based on the general shape of the scatterplot, propose a model with one independent variable, x that…

A: The scatter plot is the used to indicate the relationship between the variables. The shape of the…

Q: The table shows the number of goals allowed and the total points earned (2 points for a win, and 1…

A: Performing data analysis we obtained, a) r2 =0.734544 = 0.73 About 73% of the variation in points…

Q: A set of X and Y scores has a regression equation with a slope of b = 4. If the mean for the X…

A: A set of X and Y scores has a regression equation with a slope of b = 4. If the mean for the X…

Q: a. Using the pairs of values for all 10 points, find the equation of the regression line. b. After…

A: Answer  Given  X       1       1       1        2        2       2       3        3        3       8…

Q: The table shows the number of goals allowed and the total points earned (2 points for a win, and 1…

A: We have to calculate coefficient of determination and standard error

Q: A shoe store developed the following estimated regression equation relating sales to inventory…

A: Given: The regression equation is y ^ = 25 + 12 x1 + 7 x2. x1 is inventory investment x2 is…

Q: Suppose the equation of the regression line for the number of emails a person recieves at a…

A: we want  to find value  for 16 emails will they received

Q: uppose the equation of the regression line for the number of emails a person receives at a…

A: Given regression equation is  y = 15 + 6 ⋅ x If a person has 15 accounts  find the number of emails…

Q: Different hotels in a certain area are randomly selected, and their ratings and prices were obtained…

A: Answer:- Given, Slope = 135  y-intercept = -363 Using method , The regression line equation is,…

Q: table shows the average weekly wages (in dollars) for state government employees and federal…

A:

Q: Different hotels in a certain area are randomly selected, and their ratings and prices were obtained…

A: A  general regression line has the form, Y=b0+b1X Where,  b0: Y intercept and b1: Slope

Q: In order for applicants to work for the foreign-service department, they must take a test in the…

A: The objective of this question is to find the equation of the regression line for the given data.…

Q: The table shows the number of goals allowed and the total points earned (2 points for a win, and 1…

A: Given,

Q: A set of n=15 pairs of scores (X and Y values) has a SSX = 15 and SP = -60. If the mean for the X…

A:

Q: The data in the table can be entered into a calculator to determine a linear equation of best fit…

A: The table of an employee with a company and his/her salary over the years is given by years with…

Q: regression analysis between cost to build a clinic (in dollars) and clinic size (in square foot)…

A: Given that ; y=75+6x X represent clinic size  Y represent cost of a clinic build.  Bu using the…

Q: national pharmacy chain. Linear regression produced the equation s = 25.4a + 4.5, with r = 0.57. A…

A: Here given, s = 25.4(a) + 4.5  Here s = sales in thousand of dollars a = advertising budget for…

Q: The table shows the numbers of new-vehicle sales (in thousands) in the United States for Company A…

A:

Q: The table shows the average weekly wages (in dollars) for state government employees and federal…

A:

Q: Market researchers were interested in the relationship between the number of pieces in a…

A: Given that, the regression model is, Y^ = 0.08*X+1.20 Where x= number of pieces in a set.

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.