Q#5.(a) Given the following the values of the variables: Income (X) (000) 10 20 30 40 50 60 Expenditure(Y)(000) 7 21 23 34 6. 53 Estimate the equation of least squares regression line and discuss your results. Estimate expenditure when Income is 70 and 80. Also find the correlation between two variables and discuss your results.

Q: The following table shows worldwide sales of a type of phòne and Year 2012 2013 2017 Selling Pricep…

A:

Q: 8. The table below shows the round-trip fare for flights from one city on major airlines. These were…

A: We have given, Here dependent variable = Cost Independent variable = Distance Sample size (n) = 9

Q: Q3/ Find the equation of the regression line for the data shown Company Number of A В C E F G 6. 2 4…

A:

Q: The U.S. Postal Service is attempting to reduce the number of complaints made by the public against…

A: Given regression results

Q: and (b) below. yovermiment el Dioyees and federal government employees for 8 years. The equation of…

A: The correlation coefficient is calculated as r=∑(xi-x¯)(yi-y¯)∑(xi-x¯)2(yi-y¯)2

Q: Population Ecology Wagner" collected the data found in the following table relating the percent…

A: Given information: The data represents the values of the percent mortality y of eggs of the…

Q: Find the coefficient of determination and interpret the result.

A: Here dependent variable (y) = Money spent Independent variable (x) = Money raised Sample size (n) =…

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

A: Given data, X Y X*Y X*X Y*Y 758 1008 764064 574564 1016064 767 1045 801515 588289 1092025…

Q: The personnel director of a large hospital is interested in determining the relationship (if any)…

A: The regression model is the method of predicting the dependent variable with the known value of the…

Q: I attached the question

A: Step 1: Generating the regression equation: We have to find the estimated regression line, Where x…

Q: The owner of Showtime Movie Theaters, Inc., used multiple regression analysis to predict gross…

A: We know that, Coefficient of determination=(correlation coefficient)2 Correlation coefficient is…

Q: Use the model to make the appropriate prediction. A sociologist wanted to determine whether there…

A:

Q: n Click the icon o view the scatterplot of average teacher pay and per pupil expenditures. From the…

A: Solution: The estimated regression equation is  Avg Per Pupil$ ^=-6968+0.342Avg Teacher Pay

Q: A researcher wishes to examine the relationship between years of schooling completed and the number…

A: given regression equation is =4-5xx is the number of years of schooling completed y is the number of…

Q: Lillian conducted a small survey of her friends and family. She asked them how many hours per week…

A: With respect to given scatter plot of variables the number of hours per week they spend reading…

Q: The manager of a car dealership wants to predict the relationship between number of sales persons…

A: Given that The manager of a car dealership wants to predict the relationship between number of sales…

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

A:

Q: you take a bar of soap and weigh it after each shower.  will the regression line be positive or…

A: Answer: Regression line be negative.

Q: The slope of a regression line tells you how much or little a change in your dependent variable…

A: Introduction The regression shows the relationship between 1 dependent variable and 1 or more…

Q: 16.) Use the following regression equation regarding airline tickets to answer the question. price…

A: Given: Regression equation, price^ =49+0.22x (Distance) To find: Interpretation of slope.

Q: Suppose that for a typical FedEx package delivery, the cost of the shipment is a function of the…

A: The coefficients of intercept and slope are -23.015 and 1.468 respectively.

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

A: x y x-x¯ y-y¯ x-x¯2 y-y¯2 x-x¯y-y¯ 4162 4893 1080.5 632 1167480.25 399424 682876 3923 4833…

Q: The following table shows worldwide sales and projected sales of a certain type of phone and their…

A: The data related to selling price and sales for a certain type of phone is given.We have to…

Q: Tire pressure (psi) and mileage (mpg) were recorded for a random sample of seven cars of the same…

A: The R2 is the coefficient of determination.

Q: The data show o chest size and weight of several bears. Find the regression equation, letting chest…

A: Solution

Q: The accompanying table shows the percentage of employment in STEM (science, technology, engineering,…

A: calculation procedure for regressionsum of (x) = ∑x = 148.6sum of (y) = ∑y = 915.6sum of (x^2)= ∑x^2…

Q: 4) How to conduct multiple regression in Excel (Provide the steps)?   Driving Experience (years)…

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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.