(IN SAS) We have seen the excel file before called Game Times which shows many variables associated with 3 days of baseball games in the 2015 season. One reason people think baseball TV ratings are down is because the games last too long. Suppose we want to find out which variable has the strongest association with Time of Game to try to make games shorter. Examine the dataset graphically and draw conclusions. Do not use numerical measures at this point to draw conclusions, only graphical. HomeTeam Away Team Home_ScoreAway_Score Home_Hits Away_Hits lome_Pitchelway_Pitcher Extras ime of Gam Runs Scored Total Hits Pitchers 2 BAL BOS 3 TAM TOR 52 12 NYY NYM 6 5 PHI ATL 1 731C 10 13 11 0 8 1652 11 5 5 0 209 3 2 0 149 2 4 0 153 2 4 0 154 5 DET CLE 1 13 7 CIN CHC 3 7 B MIA WAS 3 2 888 15 3 3 0 172 9 5 6 1 228 9 6 4 4 0 152 9 MIL STL 0 3 5 8 4 3 0 162 0 COL SF 6 4 15 12 5 3 0 171 1 ARI PIT 1 2 LAA TEX 3 3 OAK HOU 4 425 7 7 4 3 0 161 8 3 3 4 0 167 23712253255 21 19 16 10 14 23 10 17 256667 10 11 15 8 13 7 10 27 8 14 7 11 7 8 11 6 5 1 216 9 19 11 4 SEA MIN 2 0 6 5 1 1 0 123 2 11 2 5 SD LAD 0 6 TAM TOR 4 7 BAL BOS 5 8 DET CLE 4 9 NYY NYM 2 0 OAK HOU 3 1 ΜΙΑ WAS 8 2 PHI ATL 2 5 324 8562 1890S 6 8 3 4 0 184 3 14 7 9 6 5 4 0 151 6 15 9 11 8 4 3 1 177 9 19 7 8 3 5 0 178 5 16 12 217 3 2 0 165 10 17 11 2 4 0 175 12 17 3 3 0 155 8 19 6 9 4 4 0 147 7 15 3 MIL STL 3 4 COL SF 4 5 ARI PIT 1 6 SD LAD 8 7 LAA TEX 4 8 SEA MIN 5 9 TAM TOR 5 0 BAL BOS 18 5521% 1N 9 12 12 8 11 8 8 8 8 927385 5 6 0 181 8 18 7 6 1 232 9 24 8566822 11 13 3 3 0 172 3 15 6 13 5 4 0 216 6 4 0 190 10 5 7 0 206 13 2 3 0 143 9536 19 21 9 16 10 13 18 12 18 5 7 20 1 CHW KC 3 2 DET CLE 8 3 CIN CHC 2 4 ΜΙΑ WAS 6 5 PHI ATL 5 6 MIL STL 6 7 CHW KC 5 8 LAA TEX 4 9 OAK HOU 0 SEA MIN 1 SD LAD 2 ARI PIT 3 NYY NYM 2652433574184 8 13 6 9826 2 6 0 193 25 29 8 4 4 0 168 5 16 8 10 4 4 0 181 14 23 8 4 4 0 166 7 12 8 14 4 4 4 0 160 8 18 8 6 10 4 3 0 158 9 16 7 10 13 6 8 300 5 3 0 183 9 23 8 4 4 0 168 8 14 8 596539 62306 15 9 5 5 1 253 9 24 10 7 10 5 4 0 191 13 17 9 9 6 4 1 220 5 3 2 0 150 14 5 4 0 198 7 6 3 0 165 6489 15 10 10 5 17 9 10 16 9

Use the estimate yest=3.3x2 - 9.4x - 0.1 to calculate a set of residuals, using a formula or a calculator. Explain your steps, then create a residual plot using this new model and assess its validity

when a regression is used as a method of predicting dependent variables from one or more independent variables. How are the independent variables different from each other yet related to the dependent variable?

Describe the correlation coefficient and explain how it is used in regression analysis?

Describe how correlation and regression are linked yet distinct.

please use this situation: A small theater company has a linear regression model to estimate y = the concession stand sales in dollars, based on knowing x = the number of people in attendance. The regression equation is: = 6.72x + 11.50 and the correlation coefficient was r = 0.781. The data set saw the number of people in attendance ranging from a minimum of 18 people to a maximum of 170 people. 1) How reliable would it be to make a prediction for the concession sales amount if there were 500 people in attendance? Explain.

A researcher is studying the intensity of hurricanes that entered the Gulf of Mexico between 1975-2015 and the average water temperature of the Gulf of Mexico at the hurricane's peak strength. What is the independent and dependent variable in this study?

A researcher gives a depression scale to 300 people now, 6 weeks later, and 6 months later. She finds that the depression scale means are relatively the same over those three time periods. Does this mean that the depression scale is valid, and/or reliable? Explain.

Elaine is interested in determining if men are more satisfied in their jobs than women in the healthcare industry. She administers a job satisfaction questionnaire to 20 men and 20 women working in hospital administration. Her grouping variable is gender and dependent variable is job satisfaction. The job satisfaction scale consists of 8 items measured using a 5-point rating scale. A higher score on this scale would indicate high job satisfaction. The maximum score that can be obtained on the scale is 40. We can assume that job satisfaction scores are normally distributed. Use the appropriate T test with a significance level of 0.05 to test the hypothesis. Research Question Do the mean job satisfaction scores differ for men and women working in the hospital administration department? Hypothesis The mean job satisfaction scores do not differ for men and women working in the hospital administration department. Compute an independent sample t test on these data. Report...

The following regression equation is based on the analysis of four variables: SM_DOLLARS is the dollar amount of a watershed conservation agency's weekly spending on social media ads. RADIO_ADS is the number of radio advertisements aired weekly by the agency. WS_DOLLARS is the dollar amount of the agency’s weekly spending on web search ads. The variable WEB_VISITS is the number of weekly visitors to their educational website. These data have been recorded every week for the past three years. WEB_VISITS (expected) = 208 + 1.25*SM_DOLLARS + 1.5*RADIO_ADS + 1.2*WS_DOLLARS The data meet the assumptions for regression analysis, and the regression results, including the coefficients, were found to be statistically significant. Initially, 320ドル was spent on social media ads, 10 radio ads were aired, and 120ドル spent on web search ads. How many additional weekly web visits would you predict when the agency increases its weekly spending on social media ads by 440ドル without changing the...