Question

Identify and Remove Relevant Points dertly one port on each scatter plot that has the greatest impact on the model by using residual plots. Describe the percentile that the point would be if the data was normally distributed by using the mean, standard deviation und zScore Describe the mpact of the point by comparing the new linear model to the original Submit Your Work Classification of Correlation Type For each of the models casty the correlation type as cause and effect, reverse cause and effect, accidental or common cause Biplan your choice and trainstorm possible common cause factors where applicable

Answer 1

mode Q3 +1.5 IQR Ans - Given the information, males Femdles. Mean 3845,455 3700 median 1400 1800 100 4850 650 450 Qu 6200 4400 IQR Ssso 5100.784 SD 4848.58 For males, @:-!:5 IQR= -2125, @g+ 1.5 IQR = 8975 For females, 11450 Q-1.SIQR = -6150 , An outlier is defined as being any point of data that lies over 1.5 IQRs below the ist Quartile or above Q3 +1.5 IQR. From females difficulties functioning the point correspon- ding to ontano seems to be outlier. From males scatter plot, the points corresponding to ontano and alberta seems to be outier. Assuming the data follows, normal distribution, f het we have to find goth percentile. From standard normal distribution table, we find the area under the curve closest to oigo The exact Z value holding 90% of the values below is 1.282 • Using 2 = 1.282, 90 percentile for males is, X= 38455455+ 1.282(4848.58) = 10001.33456 $gom percentie for females is, X - 3700 + 1,282 (5100.784) = 10239,2050 # Now, to check whether the dara is symmetric or skewed Sk* The person's coefficient of skewness for malesis, Sie males) mean-mode, 38457455-100 = 0.77248. sd. 4848.58 The data is positively skewed Skcfemales) - 3. (mean-median) 1174. positive skewed so