The following histogram lists the grade distribution for a given exam. Use this sample data to calculatethe mean, variance, and standard deviation.9876543210505560Exam Grade Distribution657075808590100

The histogram of the grade for a given exam.

Answered: The following histogram lists the grade…

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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Use the grouped data formulas to find the indicated mean or standard deviation. For the following data set, approximate the sample standard deviation. Height (in inches) Frequency 50-52 53-55 56-58 12 59-61 13 62-64 11 E
The midterm and final exam grades for a statistics course are provided in the data set below. Jaymes, a student in the class, scored 86 on both exams. Treat the given data sets as samples. Midterm: 80, 78, 85, 82, 79, 79, 78, 86, 80, 84, 78, 84, 80, 84, 81, 78, 81, 82, 78, 84 Final: 81, 88, 68, 69, 69 81, 82, 86, 76, 71, 72, 68, 77, 86, 68, 83, 84, 71, 81, 87 z-score for midterm: 1.857 z-score for final: 1.181 Based on the z-scores calculated above, which of Jaymes's grades is more unusual, the midterm grade or the final exam grade? Select the correct answer below: A. The absolute value of the z-score for the final exam grade is greater than for the midterm grade, so the final exam grade is more unusual. B. The absolute value of the z-score for the midterm exam grade is less than for the final grade, so the midterm grade is more unusual. C. The absolute value of the z-score for the midterm exam grade is greater than for the final grade, so the midterm grade is more…
The data below are the monthly average high temperatures for November, December, January, and February in New York City from the Country Studies/Area Handbook Series sponsored by the U.S. Department of the Army between 1986 and 1998. What is the sample standard deviation? 54, 42, 40, 40
Grade-point averages. Find the mean and median for the grouped data in the following table. Interval 1.95−2.15 2.15−2.35 2.35−2.55 2.55−2.75 2.75−2.95 2.95−3.15 3.15−3.35 3.35−3.55 3.55−3.75 3.75−3.95 Frequency 19 15 13 12 10 5 4 5 2 1 Mean = ______. (Round to two decimal places.) Median = ______.
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For the following sample data, answer the following:Remember you can copy and "paste special" the table into the Excel sheet. 100 57 58 94 65 32 42 19 87 70 16 56 14 What is ¯xx¯ ? What is the median? What is the standard deviation? What is the Q1? What is the range?
Calculate the range, variance and standard deviation for the following sample data. Scores: 10, 7, 9, 1, 2, 0, 6
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Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given question. Listed below are the weights in pounds of 11 players randomly selected from the roster of a championship sports team. Are the results likely to be representative of all players in that sport's league? 234 257 226 278 237 265 290 247 257 307 265 a. Find the mean. The mean is enter your response here pound(s). (Type an integer or a decimal rounded to one decimal place as needed.)
The grades for 30 students on the most recent exam are given in the data table below: Round your answer to 2 decimal places as needed 70 70 80 80 70 60 90 80 80 80 60 70 70 70 70 90 70 70 80 90 60 90 70 60 90 70 06 90 90 80 What is the mean score for the exam? What is the median score for the exam? What is the standard deviation for the exam?
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A researcher has collected the following sample data. The mean of the sample is 5. 3 5 12 3 2 The 75th percentile is 5 8.5 9 10

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The following histogram lists the grade distribution for a given exam. Use this sample data to calculate the mean, variance, and standard deviation. Exam Grade Distribution ........ 65 70 9 8 7 6 5 4 3 2 1 0 50 55 60 75 80 85 90 100