A random sample of 5 college students is selected and their grades in Example 3: Mathematics and statistics are found to be 2 3 4 5 Mathematics 85 60 73 40 90 93 75 65 50 80 1 Statistics Calculate Pearman's rank correlation coefficient.

Q: 1. A chemistry teacher conducted a 100-point pre-test at the beginning of the semester. The same…

A: Given : Student No. Pre-test score , X Post test score, Y 1 60 68 2 63 66 3 67 78 4 64 75…

Q: 1. State whether the scatter diagram shows strong positive correlation, weak positive correlation,…

A: Since we know that Positive correlation :- Both variable move in a same direction in other words as…

Q: Listed below are numbers of Internet users per 100 people and numbers of scientific award winners…

A: Here, we are given a certain data, based on the number of internet user (/100 person) , and the…

Q: 5. Given the shape of the following scatterplot, what is the most likely correlation coefficient the…

A: A scatter plot is a plot that is used to display values of two variables. It is used to determine…

Q: 3. The ranks obtained by 10 reviewees in Engineering Mathematics and GEAS in class test as follows:…

A: We want to find rank correlation

Q: As a result of a research, it was concluded that there is no relationship between the two variables.…

A: We know that- The correlation coefficient (r) is the measure of the strength of relationships…

Q: 4 Find rank correlation co-efficient for the following data and give your comments 84 Marks in…

A:

Q: The grades of 5 randomly selected students in Statistics and Risk Management courses are given…

A: Null hypothesis : correlation between statistics and risk management. Alternative hypothesis : No…

Q: A researcher is interested in the relationship between hours spent during studying per day and the…

A: Solution: The correlation coefficient can be calculated by using the following formula:

Q: Men Women 61.7 42.8 72.6 57.9 55.4 62.1 60.4 74.2 75.3 75.4 49.1 65.2

A: The given data is Men(x) Women(y) 61.7 60.4 42.8 74.2 72.6 75.3 57.9 75.4 55.4 49.1…

Q: 4. A college faculty collected data on his students' general weighted average in the first semester…

A:

Q: An Examination of eight applicants for a clerical post was taken by a firm. From the marks obtained…

A: Correlation:   It is a statistical method that can be applied between the pairs of variables in…

Q: Listed below are numbers of Internet users per 100 people and numbers of scientific award winners…

A: Given data: Internet users Award winners 78.4 5.5 78.9 9.1 57.1 3.3 67.1 1.6 76.4 11…

Q: Seven methods of imparting business education were ranked by the MBA students of two Universities as…

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Q: 1. The following table indicates the data from 8 students between the physic and chemistry courses.…

A: Assuming the following order: Excellent > Very Good > Good > Poor > Very Poor. value…

Q: Compute the rank correlation coefficient for the following data of the marks obtained by 8 students…

A: Given, marks in commerce (X) 15 20 28 12 40 60 20 80 marks in mathematics (Y) 40 30 50 30 20 10…

Q: The following table lists the heights (in inches) and weights (in pounds) for a sample of National…

A:

Q: Ten students were given tests in English and Mathematics. Their marks are given below: Student No. 1…

A: Solution:

Q: The ranking of ten students in two subjects A and B are s follows: А: 3 5 4 7 10 2 1 6 6 4 9 What is…

A:

Q: Listed below are numbers of Internet users per 100 people and numbers of scientific award winners…

A:

Q: -a 16. The ranking of 10 studenis in two subjects A and B are as follows: 4 3 6. 10 8 7 7 4. 8 10…

A:

Q: Ten freshmen civil engineering students took a test in Mathematics (x) and Chemistry (y). Their…

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Q: The data below are the final exam scores of 10 randomly selected history students and the number of…

A: We have to find critical value of r.

Q: Student 1 3. 4 8. Marks in 25 30 90 38 22 50 70 30 Economics Marks in 50 40 60 40 70 40 30…

A: Given, Let X be the marks in economics Let Y be the marks in statistics  X Y 25 50 30 40 38…

Q: Here are the shoe sizes of 10 randomly selected men, along with their heights in inches. Calculate…

A: Given that n=no. of observation n=10

Q: The ranking of 10 students in two subjects A and B are as follows 4 8 9 10 4 7 7 10 9 8 2 1 1…

A:

Q: 2. Compute and interpret the correlation coefficient for the following grades of 6 student selected…

A: Given: The Statistics and English grade is given as follows: Statistics Grade (X) English Grade…

Q: Question The number of murders and robberies per 100,000 population for random selection of states…

A:

Q: Listed below are numbers of Internet users per 100 people and numbers of scientific award winners…

A: Solution i) The linear correlation coefficient r = 0.773

Q: Compute the Pearson correlation for the following data. х 2. 3 6 4 5 Y 3 1 5 4 2.

A: Solution:Mean ˉx=∑xi/n=(2+3+6+4+5)/5=20/5=4Mean ˉy=∑yi/n=(3+1+5+4+2)/5=15/5 =3

Q: The table below gives the estimated world population (in billions) for various years. 1980 1990 1997…

A: Given data obtained as follows, x y x2 y2 x⋅y 1980 4400 3920400 19360000 8712000 1990 5100…

Q: Compute the Coefficient of Correlation between the corresponding values of x and y in the following…

A: Solution is given:

Q: Listed below are numbers of Internet users per 100 people and numbers of scientific award winners…

A: Q1. Scatter Plot. Option B.

Q: Below are a set of heights (in inches) and GPA scores for a sample of 6 students. Height GPA 60…

A: Given data, X Y X*Y X*X Y*Y 60 4 240 3600 16 55 3.2 176 3025 10.24 62 3.7 229.4 3844 13.69…

Q: The heights and weights of a sample of 11 students are: Height (m) h Weight (kg) w 1.36 1.47 1.4…

A: 1. Correlation coefficient: correlation coefficient, r=0.6422

Q: 5. The grades of a class of 17 randomly selected students taking a course in Statistics and a course…

A: Note: Hey, since there are multiple subparts posted, we will answer first three subparts. If you…

Q: Subject Extroversion Neuroticism 1 43 49 2 46 53 3 48 67 4 48 57 5 48 56 6 50 48 7 51 60 8…

A: As per guidelines we will solve first question only, please repost other questions for more answers.…

Q: Listed below are numbers of Internet users per 100 people and numbers of scientific award winners…

A: Use EXCEL to construct the scatter plot.   EXCEL procedure:     Go to EXCEL Go to Insert menu…

Q: Sort the correlation coefficients given below in a descending manner from strongest to the weakest.…

A: Correlation coefficient provides the information of magnitude and direction of the relationship…

Q: A newspaper asks two of its staff to review the coffee quality at different trendy cafés. The coffee…

A: Given information: xi yi Rxi Ryi d=Rxi-Ryi d2 3 6 5 4 1 1 8 7 2 3 -1 1 7 10 3 1 2 4 9 8 1…

Q: 1.) The data in the table below show years of teaching experience and annual salary in dollars for…

A: 1) n=12  To test, linear correlation between a mathematics instructor’s years of experience and his…

Q: The following table gives the marks obtained by a student in ten tests during the year. Calculate…

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Q: 2. You are given the following data of marks obtained by 11 students in statistics in two tests, one…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: The following table shows the selling​ prices, in thousands of​ dollars, and the square footages of…

A: The null and alternative hypotheses are stated below:Null hypothesis: There is no significant…

Q: random sample of ten professional athletes produced the following data.  The first row is the number…

A: Given data, X Y X*Y X*X Y*Y 0 2 0 0 4 3 8 24 9 64 2 7 14 4 49 1 3 3 1 9 5 13 65 25 169…

Q: Data from the U.S. Federal Reserve Board on the percentage of disposable personal income required to…

A: From the provided information, Consumer Debt (x) 7.87 7.91 7.65 7.61 7.47 7.50…

Q: The data in the table below show years of teaching experience and annual salary in dollars for 12…

A: Step-by-step procedure to find the sample correlation coefficient using Excel: In Excel sheet,…

Q: An economist is studying the job market in Denver area neighborhoods. Let x represent the total…

A: