B. Com. students in a class-test in Statistics. (Marks 100).34The following table gives the marks obtained by a batch of 30Marks obtainedRol No.Roll No.Marks obtained333255472150271268494017444862161718192021222324252627282930243342384526334448523058373835812131415Find the values of Q1, Q3, D, and Pra1234 S69060 231111

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Answered: B. Com. students in a class-test in…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Calculate the SS and the estimated SD (round to 2 decimal places)
The mode of the data 23, 21, 27, 23, 33, 30, 23, 27, 33 is_ 23 30 O 21 27 33
4
The following are the course grades of a statistics student (in order of performance) from his first year of study: 3, 4, 4, 1, 5, 5, 2, 3, 4. Does the material prove that the student's academic success improved (measured in course grades) as the first academic year progressed?
In order to compare two statistics textbooks, Mr.Marin recommends one book to one class and another book to another class. At the end of the year the classes are each examined; the results out of 100 marks are detailed below.Textbook 144 52 95 76 13 94 83 72 55 81 22 25 64 72 35 48 56 59 84 98 84 21 35 69 28Textbook 265 72 48 63 68 59 68 62 75 79 81 72 39 55 58 52 82 79 55 64 53 58 59 64 66 68 42 37(i) Calculate the mean and standard deviation for each class. (ii) Which class performed better?(iii) Which class was more consistent? (iv) Compute the coefficient of variation for each class. Comment on the results.(v) Construct a stem and leaf for each class.(vi) Compute their lower quartile, upper quartile, interquartile range and median for each class.(vii) Using a graph paper, draw a box and whisker plot for each class. Showing all parameters. Commenting on the distribution of the data set. Hence indicate whether there are outliers.
Find the 7th decile
Which of the following is not an example for 'Descriptive statistics? a. There are 80 students who register in Managerial statistics subject. O b. There is only 1 absent in midterm examination of Managerial Statistics course. O c. There are 7 chapters in the course Managerial Statistics. O d. Statistics is considered to be a very old branch of knowledge.
7) Students in a class were divided in two batches of 10. One batch was given a quiz in the morning before their lectures and the same quiz was given to the other batch in the afternoon after their lectures. The quiz scores out of 10 are given below. Morning Batch Afternoon Batch Scores Scores 658.5 7 9 55 2.5 | 10| 10| 4.5 |5.5 9.5 6.5 10 8.5 7 8 Use the run test to determine whether the time of the quiz has an effect on the scores. 3
ns/d/e/1FAIPQLSFEMIV00ZD vqigigA/formResponise 1 poin Ten students took a test in a statistics course and got the following marks: 6, 2, 8,4, 10 ,8,4,6, 8, 14. Find the mean O 7 8. O 5
.Seven instructors are rated by first and seconf year students on “clarity of presentation” and the results are tabulated. Is there a significant correlation between the ratings of freshmen and sophomores on the clarity of presentation of theseveninstructors? Intructor Freshmen Sophomores 1 44 58 2 39 42 3 36 18 4 35 22 5 33 31 6 29 38 7 22 38
The following are the lengths of stay (in days) for a random sample of 16 patients discharged from a particular hospital: 13, 9, 5, 11, 6, 3, 12, 10, 11, 7, 12, 12, 12, 9, 9,9 Send data to calculator Draw the histogram for these data using an initial class boundary of 2.5 and a class width of 2. Note that you can add or remove classes from the figure. Label each class with its endpoints. Frequency S 0 This f Length of stay (in days) 0 Tom 0:00 00:0 X
Please help with 1,2,3

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