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- Calculate coefficient of quartile deviation and coefficient of variation from the following data : Marks No. of Students Below 20 8. 40 20 60 50 80 70 100 80From the data below, find the a. mean b. median c.mode d. range e.variance and f.standard deviation of the frequency distributionGiven the data below, compute the Mean, Median, Mode, Variance, and Standard Deviation. for: Ungrouped Data 63 54 31 14 20 69 4 30 42 18 1000万744107 75 49 45 60 44 72 23 34 66 58 8 42 89 24 4 55 70 88 71 93 5 28 12 45 83 93 40 94 43 41 34 41 93 81 55 68 9 37 1 76 53 79 41 55 35 8 Upload your solution and answer in an excel file.
- Find the variance and standard deviation of the data below: Classes 1-10 11 - 20 21-30 31-40 41 - 50 51 - 60 61 - 70 71-80 81-90 Frequency 3 6 5 3 10 7 6 5 5A team of ten (10) construction workers who are working on a project are classified according to the skill levels, Classes A to D. The table below shows the number of workers in each of the four (4) classes and their respective hourly pay-rate. Pay-rate (Rands/hour) Number of workers Class A 80 Class B 60 Class C 55 Class D 50 4. Calculate the mean hourly pay-rate for the 10 workers. A. R24.50/hour B. R57/hour C. R57.50/hour D. R61.75/hourThe following table gives the math SAT scores for some recent selected years. Find the average, variance, and standard deviation of each. (Round your answers to four decimal places.) Males 499 502 504 503 498 Females 446 453 455 452 450 Males: mean variance standard deviation Females: mean variance standard deviation
- find the actual percentage in the data set, sort the DRIVE variable and count how many of the data points are less than 25 out of the total 35 data points. That is the actual percentage. How does this compare with your prediction? Mean: 57.457 Standard deviation: 26.539 Predicted percentage: 0.110 Drive: 44 20 88 6 71 42 76 63 61 63 84 28 55 33 88 80 86 83 5 85 25 25 54 54 81 73 29 76 78 77 42 65 71 94 6Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample data. Given that these are the top 10 salaries, do we know anything about the variation of salaries of TV personalities in general? 41 40 38 31 23 21 19 18 17.8 17.2MY DATA 2.54 Raisins The number of raisins in each EX0254 of 14 miniboxes (1/2-ounce size) was counted for a generic brand and for Sunmaid brand raisins. The two data sets are shown here: Generic Brand Sunmaid 25 26 25 28 25 29 24 24 26 28 28 27 28 24 28 22 26 27 24 25 25 28 30 27 26 26 28 24 a. What are the mean and standard deviation for the generic brand? b. What are the mean and standard deviation for the Sunmaid brand? c. Compare the centers and variabilities of the two brands using the results of parts a and b. 2.55 Raisins, continued Refer to Exercise 2.54. a. Find the median, the upper and lower quartiles, and the IQR for each of the two data sets. b. Construct two box plots on the same horizontal scale to compare the two sets of data. c. Draw two stem and leaf plots to depict the shapes of the two data sets. Do the box plots in part b verify these results? d. If we can assume that none of the boxes of raisins are being underfilled (that is, they all weigh approximately 1/2…
- Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample data. Given that these are the top 10 salaries, do we know anything about the variation of salaries of TV personalities in general? 40 39 38 31 23 19 16 12 11.7 11.1 The range of the sample data is $ ? million. (Type an integer or a decimal.)Which of the following five statistics are commonly used together to determine the shape of a distribution? Five answers correct. All or nothing credit. 1. The minimum 2. Variance 3. The 2nd quartile 4. The maximum 5. Coefficient of variation 6. Interquartile range 7. The 1st quartile 8. The 3rd quartile 9. Range 10. Standard deviation