2. The following frequency distribution depicts the marks received by 50 studentsin the Statistics examination at one local university.MarksFrequency60 - 64265 - 69170 - 7475 - 791280 - 841885 - 8990 - 94595 - 991a) Calculate the mean and standard deviation of the mark of the students.b) The students with mark exceed 87% will be given a prize. Examine thepercentage of the students who will be given the prize.c) Examine an interval of the marks of at least 75% of the students at that localuniversity by using Chebyshev's Theorem.

The provided information is Class Frequency(f) Mid value (x) fx fx2 60-64 2 62 124 7688…

Answered: 2. The following frequency distribution…

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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3. Below is a sample of 8 exam scores from a statistics class. Calculate the mean and standard deviation. 75 87 89 45 92 78 99 65 a) b) c) d) e) Mean = 78.8 Mean = 78.8 Mean = 82.5 Mean = 82.5 Mean = 80.7 SD = 17.3 SD = 16.2 SD = 17.3 SD = 16.2 SD = 17.7
In a sample of 18 students at East High School the following number of days of absences were recorded for the previous semester: 4, 3, 1, 0, 4, 2, 3, 0, 1, 2, 3, 0, 4, 1, 1, 5, 1, 1. Manually compute the mean, median, and range of this sample. Show work. (Round values to one decimal place)
The ages in years of a random sample of shoppers at a gamming store are shown. 12, 17, 23, 13, 20, 16, 20, 18, 13, 18. Find the range, mean, variance and standard deviation.
Following are the marks obtained by a batch of 9 students in a certain test. 65.3 , 45.6 , 35.9 , 32.2 , 38.8 , 16.16 , 62.1 , 61.6 , 42.8 Calculate mean deviation, Median deviation and coefficient of variation?
Benjamin owns a small Internet business. Besides himself, he employs nine other people. The salaries earned by the employees are given next in thousands of dollars (Benjamin’s salary is the largest, of course): 30, 30, 45, 50, 50, 50, 55, 55, 60, 75 Determine the range, population variance, and population standard deviation for the data.
Daily high temperatures in St. Louis for the last week were as follows:92, 92, 93, 92, 97, 86, 90 (yesterday). a) The high temperature for today using a 3-day moving average =91 degrees (round your response to one decimal place). b) The high temperature for today using a 2-day moving average =88 degrees (round your response to one decimal place). c) The mean absolute deviation based on a�� 2-day moving average =3.2 degrees (round your response to one decimal place). d) The mean squared error for the 2-day moving average =19..2 (round your response to one decimal place). e) The mean absolute percent error (MAPE) for the 2-day moving average =3.63% (round your response to one decimal place). How were c, d, and e solved?
Q1. The distribution of a sample of 100 women of reproductive age group in a given community is given below: Age group (years) Frequency 15 -19 41 20- 29 32 30 -39 17 40 - 49 10 Total 100 Calculate the mean and standard deviation of the age of this group of women in the community
The following table summarizes the ages of 128 people qualifying for disability insurance. Use the frequency distribution table to estimate the mean age of people in this data who qualify for disability insurance. Answer to 2 or more decimals Age Interval Frequency 28 - 33 11 34 - 39 28 40 - 45 15 46 - 51 27 52 - 57 27 58 - 63 20
Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? Male: 98 60 59 66 69 73 52 88 63 74 61 84 58 59 52 Female: 83 75 93 94 87 63 94 89 93 79 77 85 74 70 76 ----- Find the means. The mean for males is beats per minute and the mean for females is beats per minute. (Type integers or decimals rounded to one decimal place as needed.)
For question 16-18, consider the following distribution of test scores in a * science class. 16. What is the mean score of learners in the science test? Cumulative Frequency Frequency 2 75 11 73 21 62 20 41 10 21 8 11 3 Score Interval 35-39 30-34 25-29 20-24 15-19 10-14 5-9 N A. 21 OB. 22 OC. 23 OD. 27 35 75
Team A: 6,6,7,7,6,5,6,5,4,5 Team B: 2,2,3,8,9,9,9,9,10,10 a. Compute the mean number of shots made for each team b. Compute the standard deviation for each team c. Compute a Z-score for the individual from team A that made 4 shots d. Compute a Z-score for the individual from team B who made 10 shots e. Using non-statistical language, write several sentences describing the difference in the free-throw shooting abilities between the two teams
Rank the data sets described in order of the least spread out (1) to the most spread out (5) based on the standard deviation. Set A: o = 3.5 [ Select ] Set B: o = 8.02 [ Select ] Set C: o = 1.4 Select ] Set D: o = 5.7 Select ] Set F: o = 0.58 [ Select ]

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