An education researcher wanted to examine whether there was a difference in academic performance between students who did face-to-face lessons and those who did online lessons.

To achieve this, he recorded the overall scores (upon 100%) of a class of 45 SUSS students who studied Statistics through face-to-face mode during the 2019 July semester. Similarly, he took the overall scores of another class of 50 students who studied Statistics through the online mode during the 2020 July semester. The dataset can be found in the below

(a)Describe three (3) measures of location and three (3) measures of dispersion. State the values of these measures for both classes. You are required to present the relevant Excel reports.

(b)Show three (3) statistical concerns on the approach used in the study. If you have a free hand to study this research question starting from data collection to analysis, illustrate how you would conduct the project.

1 Statistics Overall Scores NJ 2019 Jul 2020 Jul 4 30 35 25 23 6 33 56 7 29 60 8 55 66 9 62 77 10 85 85 11 68 64 12 80 65 13 15 88 14 65 74 15 40 22 16 50 36 17 32 50 18 40 64 19 50 55 20 59 81 21 90 66 22 16 49 23 90 68 24 40 56 25 19 63 26 45 32 27 49 41 28 45 53 29 75 23 30 80 46 31 74 77 32 75 55 33 90 33 34 30 78 35 36 65 36 50 84 37 49 32 38 62 13 39 80 63 40 75 33 41 65 44 42 66 55 43 78 77 44 45 65 45 34 10 46 70 70 47 60 46 48 46 2047 60 46 48 46 20 49 50 50 66 51 70 52 65 53 79