The data obtained in a study on the number of absences in virtual class and the final grades of seven randomly selected students from a mathematics class. The data are shown below. To determine the significance of the correlation coefficient at 0.05 level of significance, what is the calculated or computed value (CV)? * Number of absences x Final in a virtual class grade y 6 82 86 15 43 74 2 58 90 78 00

Q: Does more education lower a person’s level of prejudice? The number of years of education and the…

A: X :- 12, 15, 14, 13, 18, 10, 16, 12, 10,  4 Y :-1,  6,    2,     3,   2  , 4,    1,   5,   5, 10…

Q: A grocery store manager did a study to look at the relationship between the amount of time (in…

A: Since, you have posted a questions with multiple sub-parts, we have provided answer for 3 subparts…

Q: The data below are the number of absences and the final grades of 9 randomly selected students from…

A: The data shows the number of absences and the final grades of 9 randomly selected students from a…

Q: n each​ case, find the approximate sample size required to construct a 95​% confidence interval for…

A: Given, In each​ case, find the approximate sample size required to construct a  95​% confidence…

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Q: A study of bone density on 5 random women at a hospital produced the following results. Age 37 41 49…

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Q: In the table below, let X be the number delinquent peers a respondent has and Y be the number of…

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Q: The data shown below consists of the price (in dollars) of 7 events at a local venue and the number…

A: Null and alternative hypothesis: The investigator is interested to test whether the there is a…

Q: A Statistics professor wants to determine how students’ final grades are related to the midterm exam…

A: Given data: Final Grade (y) Midterm Grade (x1) Classes Missed (x2) 81 75 1 90 80 0 86 91 2…

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A: Weeks of Gestation, XWeight (in pounds), Y345367377.5388409

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Q: Professor Pass Anyone, a statistics instructor, wants to determine if there is a positive linear…

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Q: Listed below are the numbers of cricket chirps in 1 minute and the corresponding temperatures in °F.…

A: Chirps in 1 min Temperature  893 69.9 1177 93.2 1119 85.6 871 76.3 1220 87.7 1038 82.2…

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A: It is given that  The regression equation is  Highway = 50.989 - 0.0057705*(Weight)

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A: Solution

Q: The given paired data lists the heights (in inches) of various males who were measured on their…

A: Given n=6 Alpha =0.05

Q: 2.5 2.6 1.7 1.8 2.2 4.5 4.9 3.7 4.0 4.3

A: The data set are :-X :- 2.5, 2.6, 1.7, 1.8, 2.2Y :- 4.5, 4.9, 3.7, 4.0, 4.3Then,We will find…

Q: An experiment was run and the following data table was produced. Input Response 1 1 2.5 2 3…

A: If the correlation coefficient is positive then the data is positively correlated or if the…

Q: ID Alcohol Tobacco 01 6.47 4.03 02 6.13 3.76 3.77 3.34 03 6.19 04 4.89 05 5.63 3.47 06 4.52 2.92 07…

A: We define the degree of relationship, to which both variables associated to be correlation…

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A: Solution-: We determine correlation coefficient and check it is statistically significant or not.

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A: The following data for the X and Y variables are provided to find the sample correlation…

Q: Find the linear correlation coefficient between cumulative GPA and each of ACT English score, ACT…

A: The linear correlation coefficient between cumulative GPA and ACT English score is 0.3756 and it is…

Q: Compute the correlation coefficient, r.

A: The correlation coefficient formula is, r=n∑ixy-∑ix∑iyn∑ix2-∑ix2n∑iy2-∑iy2 The sums are, Chest(x)…

Q: nalysis Name: Date: Score: Section Exercise 10.3 1. SJS Company has been selling to retail customers…

A: First, we need to calculate the coefficient of correlation (r) for the SJS Company. The formula for…

Correlation

Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

Linear Correlation

A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related. 

Regression Analysis

Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.