Calculate the mean, variance, and standard deviation of 5 students exam scores, from a Statisticscourse with a total of 25 students: 89,68,94,87,and 69.Round to two decimal places as neededClick this video to learn more about the formula8968948769III2x)²MeanVarianceStandardDeviation

Given Total number of students 25 x=89,68,94,87,69

Answered: Calculate the mean, variance, and…

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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1.2, 2.7, 5.3, 3.4, 4.1,4.6, 3.3, 2.6. Find the standard deviation
Please see attached.
A simple data set has been provided to practice the basics of finding measures of variation. 2, 4, 8, 8 For the data set, determine the range and the sample standard deviation.
You will be comparing two sets of data for this assignment. 1. Determine the average number of toilet paper rolls* for Fall 2022 biochemistry and genetics students (individually) and calculate the standard deviation of each using the equation. Please be sure to show your work. I know that you can easily use tools like Microsoft Excel to calculate standard deviation, but I would like to see you complete the work by hand so that you get a sense of the role of each component of the equation. Ignore students that did not provide answers (don't use those students in the mean or N value calculations). 2. Please answer the following questions when you submit your data. Which group had a higher mean number of rolls of toilet paper? Which value had the most variability? Referring to the equation, how could you decrease the amount of variability in the mean? Did you find the variation surprising or unexpected? The two sets of data and the standard deviation formula pictures are attached…
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Chapter 2, Section 3, Exercise 078 9,12,15,18,19,21,25,27,28,32,34 Using StatKey or other technology, find the following values for the above data.Click here to access StatKey.(a) The mean and the standard deviation.Round your answers to one decimal place.mean =standard deviation =(b) The five number summary.Enter exact answers.The five number summary is (, , , , )
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