A researcher is interested in investigating the effects of Race on Reading scores. (b)  Report the sample means and variances of the reading scores for each of the race groups. Specify which of these sample values would be compared to evaluate the homogeneity of variance assumption race: 1 - hispanic, 2 - asian, 3 - black, 4 - white race RDG 1 34 1 47 1 42 1 39 1 36 1 50 1 63 1 44 1 47 1 44 1 50 1 44 1 47 1 42 1 42 1 47 1 60 1 39 1 57 1 73 1 47 1 39 1 35 1 39 1 48 1 31 1 52 1 47 1 36 1 47 1 34 1 52 1 42 1 37 1 44 1 71 1 47 1 42 1 42 1 47 1 52 1 52 1 39 1 31 1 60 1 47 1 39 1 42 1 47 1 42 1 36 1 50 1 34 1 55 1 28 1 42 1 44 1 60 1 39 1 36 1 44 1 39 1 39 1 42 1 42 2 52 2 65 2 42 2 47 2 52 2 44 2 52 2 47 2 65 2 63 2 60 2 47 2 65 2 53 2 68 2 55 2 39 2 52 2 65 2 52 2 57 2 63 2 41 2 57 2 36 2 55 2 50 2 63 2 50 2 51 2 47 2 57 2 73 2 52 1 73 1 44 1 57 1 60 1 65 1 57 3 44 3 39 3 55 3 41 3 39 3 63 3 45 3 53 3 31 3 66 3 50 3 44 3 42 3 56 3 38 3 50 3 40 3 71 3 46 3 43 3 68 3 47 3 54 3 39 3 47 3 59 3 63 3 34 3 39 3 39 3 45 3 55 3 36 3 47 3 39 3 36 3 57 3 52 3 42 3 50 3 36 3 45 3 50 3 55 3 60 3 42 3 36 3 52 3 50 3 39 3 55 3 34 3 36 3 36 3 47 3 55 3 50 3 52 4 63 4 47 4 55 4 55 4 47 4 71 4 55 4 57 4 55 4 44 4 68 4 65 4 55 4 71 4 57 4 71 4 34 4 76 4 71 4 59 4 65 4 52 4 63 4 52 4 42 4 63 4 50 4 55 4 52 4 55 4 42 4 60 4 68 4 50 4 55 4 37 4 52 4 39 4 73 4 58 4 55 4 44 4 44 4 55 4 57 4 42 4 55 4 57 4 57 4 34 4 42 4 52 4 65 4 50 4 57 4 50 4 57 4 44 4 47 4 60 4 44 4 61 4 47 4 52 4 55 4 61 4 42 4 63 4 39 4 63 4 57 4 60 4 73 4 52 4 65 4 34 4 63 4 63 4 68 4 55 4 68 4 62 4 43 4 50 4 65 4 63 4 63 4 60 4 50 4 55 4 52 4 44 4 44 4 39 4 50 4 50 4 52 4 55 4 68 4 55 4 42 4 35 4 44 4 57 4 42 4 44 4 65 4 50 4 52 4 45 4 52 4 55 4 44 4 73 4 52 4 50 4 55 4 44 4 53 4 73 4 65 4 61 4 65 4 55 4 50 4 60 4 65 4 65 4 57 4 60 4 57 4 47 4 39 4 66 4 63 4 60 4 73 4 60 4 60 4 55 4 52 4 50 4 34 4 76 4 47 4 34 4 54 4 47 4 52 4 50 4 50 4 57 4 36 4 60 4 39 4 47 4 60 4 44 4 34 4 34 4 68 4 42 4 46 4 68 4 52 4 52 4 44 4 39 4 44 4 34 4 52 4 63 4 42 4 44 4 50 4 71 4 68 4 68 4 36 4 42 4 39 4 52 4 57 4 63 4 65 4 34 4 47 4 52 4 55 4 39 4 55 4 42 4 60 4 66 4 63 4 50 4 60 4 68 4 55 4 39 4 52 4 39 4 66 4 68 4 39 4 39 4 42 4 44 4 52 4 68 4 50 4 36 4 42 4 57 4 68 4 63 4 50 4 61 4 39 4 47 4 44 4 44 4 47 4 52 4 43 4 45 4 60 4 65 4 46 4 44 4 73 4 47 4 39 4 50 4 47 4 46 4 44 4 44 4 63 4 63 4 63 4 60 4 65 4 43 4 52 4 63 4 63 4 63 4 43 4 60 4 55 4 68 4 44 4 65 4 44 4 55 4 45 4 63 4 63 4 68 4 47 4 47 4 55 4 63 4 36 4 60 4 60 4 55 4 44 4 42 4 65 4 55 4 55 4 50 4 36 4 47 4 52 4 68 4 42 4 42 4 65 4 63 4 60 4 41 4 42 4 63 4 68 4 47 4 42 4 44 4 55 4 52 4 52 4 39 4 50 4 42 4 65 4 71 4 52 4 44 4 60 4 42 4 50 4 39 4 44 4 68 4 57 4 50 4 52 4 60 4 44 4 55 4 52 4 57 4 55 4 60 4 44 4 57 4 39 4 63 4 57 4 63 4 55 4 52 4 55 4 55 4 31 4 55 4 71 4 36 4 37 4 65 4 52 4 63 4 63 4 63 4 66 4 65 4 52 4 73 4 63 4 55 4 76 4 52 4 47 4 52 4 34 4 60 4 39 4 50 4 47 4 63 4 65 4 50 4 55 4 57 4 68 4 52 4 52 4 36 4 50 4 63 4 47 4 63 4 60 4 55 4 60 4 50 4 47 4 44 4 50 4 47 4 57 4 52 4 71 4 57 4 55 4 50 4 47 4 65 4 44 4 47 4 60 4 63 4 34 4 42 4 50 4 65 4 55 4 63 4 44 4 65 4 57 4 60 4 44 4 57 4 45 4 44 4 63 4 57 4 57 4 47 4 65 4 42 4 47 4 56 4 44 4 47 4 50 4 47 4 65 4 44 4 63 4 44 4 47 4 45 4 63 4 53 4 50 4 57 4 57 4 55 4 44 4 48 4 52 4 50 4 47 4 55 4 47 4 44 4 44 4 52 4 60 4 63 4 68 4 57 4 63

Which of the following biases occurs when various groups in a study are assessed differently for an outcome? OA. Selection OB. Reporting OC. Detection OD. Attrition

Problem: The number of misdirected luggage cases reported for 5 consecutive weeks at the domestic airport were:   4, 5, 7, 8, 61. Compute the Mean, Median, Range, Interquartile Range, Variance and Standard deviation.

Researchers want to know if a tutoring program affects students’ ACT scores. They used a sample of twenty students and tested them before and after the tutoring program. Use Excel to perform a dependent sample t-test to determine whether the difference between the mean pretest score and the mean posttest score is significantly different. Assume unequal variance.   Subject Pretest Posttest 1 21 25 2 30 33 3 25 26 4 28 31 5 31 34 6 16 16 7 19 21 8 21 24 9 26 27 10 34 34 11 22 23 12 18 24 13 14 17 14 19 23 15 24 25 16 33 30 17 25 27 18 26 26 19 22 24 20 19 18