Question

The table below gives the list price and the number of bids received for five randomly...

The table below gives the list price and the number of bids received for five randomly selected items sold through online auctions. Using this data, consider the equation of the regression line, yˆ=b0+b1xy^=b0+b1x, for predicting the number of bids an item will receive based on the list price. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line to make a prediction if the correlation coefficient is not statistically significant.

Price in Dollars 2323 3434 4444 4646 5050
Number of Bids 11 22 44 99 1010

Table

Copy Data

Step 4 of 6 :  

Find the estimated value of y when x=46x=46. Round your answer to three decimal places.

Homework Answers

Answer #1

Using Excel we use, the regression equation is,

y-hat = -7.7841 + 0.3295x

Step 4) We want to predict y when x = 46

y-hat = -7.7841 + (0.3295 * 46)

=> y-hat = -7.7841 + 15.157

=> y-hat = 7.3729

=> y-hat = 7.373

Answer : 7.373

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