Example 13.15. The following table gives the distribution of students and also ofregular players among them, according to age in completed years :Age in years151617181920:No. of students25020015012010080Regular players20015090483012Calculate the coefficient of association between majority and playing habit, on theassumption that majority is attained in 18th year.

Answered: Image /qna-images/answer/e31096f9-d6b7-4e27-80cb-65a2f0f12399.jpg

Answered: Example 13.15. The following table…

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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2. Here are the scores on the first exam in an introductory statistics course for 30 students in one statistics course: 57 59 61 65 68 70 70 73 73 75 75 75 78 80 80 80 82 82 83 85 85 87 90 90 91 92 92 94 94 98 Use these data to make a stemplot. Use the stemplot to describe the distribution of the first-exam scores for this course.
Example 21. Ten competitors in a beauty contest were ranked by three judges in the following order : First Judge: 1 5 10 3 2 4 Second Judge 3 5 8 4 7 10 2 1 6. 9 Third Judge 4 1 2 3 10 7 Use the method of rank correlation to determine which pair of judges has the nearest approach to common tastes in beauty. 00
Is there a relationship between Facebook use and age among college students? The following two-way table displays data for the 219 students who responded to the Age Younger (18–22) Middle (23–27) Older (28 and up) Facebook user? Yes 78 49 21 No 4 21 46 What percent of the students who responded were Facebook users? What percent of the students in the sample were aged 28 or older? What percent of the students who responded were older Facebook users? What percent of the Facebook users in the sample were younger students? Find the distribution of Facebook use for each of the three age groups. Make a stacked bar graph to compare these Describe what the graph in part (e) reveals about the association between age and Facebook
“The incidence of depression among college students is negatively correlated with the number of sunny days each year in the locale where they attend college.” This statement means that: a. a student attending college in a locale with very few sunny days will become depressed. b. if a depressed student were to move to a locale with more sunny days, the student's depression would subside. c. the chances of a college student being depressed tend to increase as the number of sunny days increases. d. the chances of a college student being depressed tend to increase as there are fewer sunny days.
.14. The ranks of 10 students in two subjects A and B are as follows: A: 3 8. 4 7. 10 2 1 6 9 B: 6 4 6. 8. 2 3 10 5 7 Calculate the coefficient of rank correlation 219
Suppose the following data show the rankings of 11 states based on expenditure per student (ranked 1 highest to 11 lowest) and student-teacher ratio (ranked 1 lowest to 11 highest). State Expenditureper Student Student-TeacherRatio A 9 10 B 5 7 C 4 6 D 2 11 E 6 4 F 11 3 G 1 1 H 7 2 I 8 8 J 10 5 K 3 9 What is the rank correlation between expenditure per student and student-teacher ratio? (Round your answer to three decimal places.) Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = rs =
The data describes the life expectancy for males in 160 countries. The following statements analyze the data distributions for countries with low-per-capita income and countries with high-per-capita income. Per capita income(160 countries) Life expectancy (males) Low High 45-49 2 0 50-54 8 1 55-59 16 1 60-64 18 6 65-69 18 7 70-74 8 32 75-79 0 31 80-84 0 12 Totals 70 90 Suppose that you are tasked with writing analysis to compare the distribution of male life expectancy for low-income countries with the distribution of male life expectancy for high-income countries. Which of the following statements should you include in your analysis? Check all that apply. Group of answer choices 1. Typically, countries with low per capita income have a male life expectancy of 60 to 70 years, and countries with high per capita income have a male life expectancy of 70 to 80 years. 2. The overall range in life expectancies for males living in…
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1.) The data in the table below show years of teaching experience and annual salary in dollars for 12 randomly selected mathematics instructors in Illinois colleges/ universities for the 2013/2014 school year. Is there a linear correlation between a mathematics instructor’s years of experience and his or her annual salary? Number of Years 7 9 6 7 11 12 11 3 3 7 9 1 Salary (in Dollars) $48,897.00 $62,866.00 $54,585.00 $56,611.00 $53,541.00 $53,541.00 $47,027.00 $47,970.00 $46,668.00 $48,029.00 $46,735.00 $45,000.00 THE OTHER QUESTION 2.) Does incubation or gestation time affect an animal’s average lifespan? Some animals have lifespans that average well over 100 years. The following table lists animals that have some of the longest lifespans on the earth. Is there a correlation between an animal’s gestation/incubation period and its average lifespan in years? Animal: Nile crocodile, Aldabra giant tortoise, Lake sturgeon, Galápagos tortoise, Bowhead whale Average Lifespan (in…
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4- Consider the set of following data: Temperature 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Percent heat loss from 32 34 35 33 37 46 55 51 43 52 45 53 58 60 62 62 beak a) Make a scatterplot and describe the main features of the distribution. b) Find the correlation coefficient if you see a linear association (use a calculator).

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