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a. From these data, determine the mean (mean), variance (variance), Quartile-1 (Q1), Quartile-3(Q3) and inter-quartile (IQR) b. Test participants are classified as quite diverse in ability, if the coefficient of diversity (Coefficient of variation) the score value is more than 15%. Based on the test scores, Do participants have various abilities? C. Participants are classified according to the following criteria: Group I: if the score is less than the average value - (0.5 x IQR) Group II: if the score is between average – (0.5 x IQR) to (average + (0.5 x IQR) Group III: if the score is more than the average + (0.5 x IQR) Count the frequency of participants from each group and visualize. d. The company will continue the interview for participants who have a score of 25% biggest. What is the participant's score in order to be able to continue the interview stage?