1. Find the degree of skewness of the following sets of data:a. Height of Students in cm:1261341551501501521521601651741751751751761761761762. Calculate the degree of kurtosis for the data below:a. Lengths in cm of statistics books sold in a Department Store:152020212121222325283031323334353535353535

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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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STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 44 inches long and 1.51.5 inches square? Given are data from students doing a laboratory exercise. 33,190 31,860 32,590 26,520 33,280 32,320 33,020 32,030 30,460 32,700 23,040 30,930 32,720 33,650 32,340 24,050 30,170 31,300 28,730 31,920 To access the complete data set, click the link for your preferred software format: Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt! We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Engineers also commonly assume that characteristics of materials vary Normally. Suppose that the strength of pieces of wood like these follows a Normal distribution with standard deviation 3000 pounds. PLAN: We will estimate ?μ by giving a 98% confidence interval. SOLVE: Find the sample mean ?¯ . (Enter your answer rounded to the nearest whole number.) ?¯= Give a 98% confidence…
The following table shows the number of hours some high school students in 2 cities spend watching television each week: City A 21 23 24 22 24 25 23 23 22 City B 24 22 20 23 23 50 20 46 21 Part A: Create a five-number summary and calculate the interquartile range for the two sets of data, and tell whats the best measure of center. Justify.
STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 44 inches long and 1.5 inches square? Given are data from students doing a laboratory exercise. 33,190 31,860 32,590 26,520 33,280 32,320 33,020 32,030 30,460 32,700 23,040 30,930 32,720 33,650 32,340 24,050 30,170 31,300 28,730 31,920 We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Engineers also commonly assume that characteristics of materials vary Normally. Suppose that the strength of pieces of wood like these follows a Normal distribution with standard deviation 3000 pounds. PLAN: We will estimate μ by giving a 95% confidence interval. SOLVE: Find the sample mean x¯ . (Enter your answer rounded to the nearest whole number.) x¯= Give a 95% confidence interval, [low, high] , for the mean load required to pull the wood apart. (Enter your answers rounded to the nearest whole number.) low=…
The data table to the right represents the volumes of a generic soda brand. Complete parts (a) and (b) below. a. Which plot represents a dotplot of the data? O A. O C. 50 60 50 70 80 90 Volumes of soda (oz) 60 70 80 90 Volumes of soda (oz) o o Q Q 520 Q Q 5 www. O B. OD. 50 50 60 70 60 Volumes of soda (oz) 70 80 75 70 65 50 元 5 75 75 85 . 70 65 Volumes of soda (oz) 80 90 70 80 90 Volumes of soda (oz) 65 80 70 Q Q Q Q
1la With the aid of simple diagrams, explain the types of skewness. b Calculate the skewness for the data set below Class 16-20 21-24 25-29 30-34 35-39 40-44 45-49 Frequency 16 11 31 19 25 35 25
The densities of several common metals are shown in the following table. Metal Density (g/cm³) iron 7.87 silver 10.49 lead 11.36 zinc 7.13 aluminum 2.70 For her chemistry lab, Kamila needs to identify three metal samples by density. The data she collected is shown in the following table. The metal samples are all rectangular prisms.
Refer to the illustration below: Height 177 - 183 170-176 163 - 169 156-162 149-155 142 - 148 135-141 What is the class width? Frequency 1 4 5 16 12 4 3
Assume now that taking into account the genders of the persons whose heights were given inQuestion 1, we get the following sets: Height in centimeters – males171 178 157 171 175 182 162 167 166170 154 190 156 180 166 184 161 159Height in centimeters – females152 149 158 166 150 144 167 152 153152 165 154 162 166 153 157 161 152 (a) Construct a side-by-side stem-and-leaf plot for the two data sets. (b) Draw an overlay frequency polygon comparing the two data sets. Use the same classes asin Question 1. (c) What conclusion may we draw about relative heights of males and females in this sample? Justify your answer!
The scatter diagram matches the data: height weight 70 60 35 45 40 60 42 58 20 37 50 10 31 40 30 20 40 30 Height 39 57 35 42 O True False Weight
Use this data set to answer the following questions. (CSLO 1,2,7) 115 184 191 216 153 185 194 183 236 202 a. Calculate 1QR b. Use IQR to determine whether there are any outliers. Explain
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1. Find the degree of skewness of the following sets of data: a. Height of Students in cm: 126 134 155 150 150 152 152 160 165 174 175 175 175 176 176 176 176