Question

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+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 23 34 44 46 50

number of bids 1 2 4 9 10

step one : find the estimated slope. round answerv to three decimal places

step two: find the estimated y-intercept, round your answer to three decimal places

step 3: find the value of the coefficient determination round to three decimals places

s

Answer 1

step 1: estimated slope b1=0.330

step 2: y intercept =-7.784

step 3: coefficient determination =r² =0.773