Answered: What is the sample size? What is the…

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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Formula attachemnt-- You can use this spreadsheet as a resource to complete it. There are two tabs on the spreadsheet. The first tab says "Data and Questions." If you would like, you can enter in the data provided on the Week 3 Practice Activity in column A of this tab (in the 50 highlighted cells). You will see that column D has some formulas for the different summary statistics I would like you to calculate (besides variance and standard deviation). Once you enter the data set in column A, you will see the values for the summary statistics populate in column D. The second tab, titled "Table for Variance and Std. Deviation" has formulas to help you calculate variance and standard deviation (scroll down). Again, you will need to enter the 50 values from the data set in the 50 highlighted cells in column B. In both tabs, only enter the data set in the highlighted cells. Do not change any other values (otherwise the calculations may be incorrect).

Though I would like you to show your work/thought process for each question on the practice activity itself, you can use the Excel formulas to double check that your "by hand" calculations are correct and/or to help you calculate the final values after you have shown your work/thought process. I think this will be particularly helpful for the questions that ask about variance and standard deviation\

INFO BELOW

Week 3 Practice Activity

Use the data in the box below for questions 1-12. Do not delete the prompts. Show all your work and provide your answer clearly under each question. If you would rather write your response by-hand, you can add space under each question, print out this document, complete your work, and scan it back to your computer. You may work on this Practice Activity independently or in groups (you can use the Student Lounge to coordinate with other students). However, each student should submit their own Practice Activity to the Dropbox by 11:55 p.m. CST.

3 4 6 10 11 12 12 14 15 15

16 17 18 19 26 27 27 30 31 31

32 33 35 35 36 37 39 39 39 41

41 42 43 44 45 50 52 53 55 56

58 58 59 59 60 63 63 64 66 87

What is the sample size?
What is the sample mean?
Calculate the sample variance.
What is the standard deviation?
What is the sample median?
What is the value for Quartile 1?
What is the value for Quartile 3?
What is the IQR?
What is the lower limit for identifying outliers?
What is the upper limit for identifying outliers?
What is the minimum value?
What is the maximum value?

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

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