Evaluate an appropriate measure of dispersion for the following data :Income :Less than 5050–7070-9090–110110–130 | 130–150above 150No. of Persons :5410014030023012551

Dispersion gives us an idea about the homogeneity or heterogeneity of the distribution. It tells us…

Answered: Evaluate an appropriate measure of…

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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Activity 14. Dependent t-test Directions: Analyze if there is significant difference between the pretest and posttest scores of students in a vocabulary test. Pre Post 11 12 9 13 13 10 8 7 10 9 7 7 8 15 12 9 9. 11 10 10 10 123 456 00
Exhibit 2-1The numbers of hours worked (per week) by 400 statistics students are shown below. Number of Hours Frequency 0 ≤ x < 10 20 10 ≤ x < 20 80 20 ≤ x < 30 200 30 ≤ x < 40 100 The cumulative relative frequency for the class of 20 ≤ x < 30 is _____.
Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI image pixel counts and IQ scores. Females Males MRI IQ MRI IG The data is reported to the right. Complete parts (a) through (d) below 139 858,472 140 955,003 935,494 924,059 1.079.550 1,001.121 Click the icon to view the critical values table. 991,305 138 141 857,782 833,868 790,619 133 135 132 141 135 140 AMRI 1,080,000- AIO 145 AIO 145- AMRI 1,080,000 780,000 130 130 780,000 130 780,000 780,000 130 1,080,000 145 1,080,000 MRI 145 MRI (b) Compute the linear correlation coefficient between MRI count and IQ. Are MRI count and IQ linearly related? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. Yes, MRI count and IQ are linearly related since the linear correlation coefficient is O B. No. MRI count and IQ are not…
**PLEASE READ AND ACTUALLY ANSWER ALL QUESTIONS - THE LAST RESPONSE THIS QUESTION ANSWERED ONE OF FOUR. TOTAL CRAP** What is the income distribution of super shoppers? A supermarket super shopper is defined as a shopper for whom at least 70% of the items purchased were on sale or purchased with a coupon. In the following table, income units are in thousands of dollars, and each interval goes up to but does not include the given high value. The midpoints are given to the nearest thousand dollars. Income range 5-15 15-25 25-35 35-45 45-55 55 or more Midpoint x 10 20 30 40 50 60 Percent of super shoppers 22% 14% 20% 17% 19% 8% (a) Using the income midpoints x and the percent of super shoppers, do we have a valid probability distribution? Explain. Yes. The events are indistinct and the probabilities sum to less than 1.No. The events are indistinct and the probabilities sum to 1. No. The events are indistinct and the probabilities sum to more than 1.Yes. The events are…
The table gives some information about the delays (in minutes) of 80 flights. Delay (n minutes) Frequency Cumulative frequency 10 - 19 16 16 20 - 29 26 42 30 - 39 23 40 - 49 10 75 50 - 59 5 80 The number of flights which delayed 39 minutes or less than 39 minutes is:65 flights. true false
A magazine publishes restaurant ratings for various locations around the world. The magazine rates the restaurants for food, decor, service, and the cost per person. Develop a regression model to predict the cost per person, based on a variable that represents the sum of the three ratings. The magazine has compiled the accompanying table of this summated ratings variable and the cost per person for 25 restaurants in a major city. Complete parts (a) through (e) below. E Click the icon to view the table of summated ratings and cost per person. a. Construct a scatter plot. Choose the correct graph below. O A. OB. OC. O D. ACost ($) 90- ACost ($) 90- ACost ($) 90- ACost ($) 90- 0- 0- 0- 0- 90 90 Rating Rating Rating Rating
Please explain and answer
Prove using a formula of the geometric mean that if we add a constant (for example, d) to all data values, the geometric mean increases by a constant
Following data of high temperatures for 15 days. the mean , median and mode describe the set as symmetric, skewed left, or skewed right 50 45 49 50 43 49 50 49 45 49 47 47 44 51 51
How to solve Mean and Median using these formulas?
147 153 166 173 186 182 183 186 182 166 182 163 153 145 1. find the mean 2. what is meadian 3. what is the mode
Alex records the running time-the number of minutes a movie lasts from start to finish-of 50 popular movies. Which interval contains the median movie run time? 90-100 minutes The distribution of times, in minutes, is shown in the histogram below. 100–110 minutes 110–120 minutes Movie Running Times O 120–130 minutes 16 14 12 4 70 80 90 100 110 120 130 140 150 160 Time (Minutes) Frequency 2.

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Evaluate an appropriate measure of đispersion 10I the Income : Less than 50 50–70 70-90 90–110 110–130 | 130–150 above 150 No. of Persons : 54 100 140 300 230 125 51