Culculute the coefficient of skewness from the following duta hy using quartiles. -Marks No. of students Marks No. of students Above (0 180 Above 60 65 Above 15 160 Above 75 20 Above 30 Above 45 130 Above 90 100 5
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- Find the mean hourly cost when the cell phone described above is used for 240 minutes.Find the coefficient of variation for the waiting times at Bank A and Bank BFor the following pairs of data points (10, 100), (8, 120), (5, 200), (4, 200), (10, 90), (7, 110) , and (6, 150) , the value of the coefficient of determination R ^ 2 is A. 0.8596 B. 0.7389 c. 0.9271 d. 0.5869
- A lecturer at WIN wanted to know if he can predict student’s quiz results by asking them to complete a simple survey. The result of the survey is found in the file: Assignment 2 sem22020 data set 1.Quiz ResultActual Mark (0-15) for quiz student attainedEQRQuiz score (0-15) expected to get before taking the quizStudy Hrs.Number of hours per week (on average) spent studying for StatisticsAgeAge (in years)BBTSatisfaction rating of Big Bang TheorySexM=1 F=0MBMB=1 for good math background, otherwise 0MCMC= 1 if math centre is used regularly, otherwise 0AuHSAuHS = 1 if student completed high school in Australia, otherwise 0LMLM=1 if student likes math, 0 otherwiseTask 1: Variable List(a) Using the variables listed in the table above, Describe each variable.(b) State for each variable whether it is qualitative or quantitative; if it is qualitative, state whether it is nominal or ordinal, and if it is quantitative, state whether it is discrete or continuous.Task 2: HistogramCreate a histogram…show full work for psych statsWhat is assignable variation?
- A researcher wants to test the association between 4 stress levels and 8 choices of favorite color in mature adults. The Chi-square value coputed was 30.72. At the 0.5 level what should the researcher conclue. Show work.What is Brad's average typing rateAssume the professor of a particular course is male, and interpret the coefficient on FemaleStudent. What is the predicted difference in performance between a female student and a male student? What's the magnitude of the coefficient?