The coefficient of correlation between x and y is r= 0.59. Calculate the coefficient of determination r^2 . Round r^2 to the nearest hundredth

Q: Calculate the correlation between Corr(exY, ex)

A: Given: Corr(exy,ex)

Q: Compute the correlation coefficient, of the hours and final grade.

A: Let X denotes the Hours of study and Y denotes Final grade for given subjects. To find : Correlation…

Q: The correlation between the depth (in feet) and length (in feet) for a sample of caves is found to…

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Q: Describe about the mean absolute deviation.

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Q: A student calculates the value of r as +0.72 for a question comprising 5 pairs of observations and…

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Q: The mean and standard deviation of 200 items are found to be 60 and 20 respectively. If at the time…

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Q: The distribution of heights of U.S. female college students is approximately normal with a mean of…

A: The population mean is 63.5, and standard deviation is 2.8. The Z-score is -1.5. The Lisa’s height…

Q: In a herd of longhern cattle the mean horn length is 52cm and h2 is 0.2. Predict the mean horn…

A: Heritability is a measure of additive effects of genes, it tells whether the observation variation…

Q: The covariance between the returns of A and b is -0.112. The standard deviation of the rates of…

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Q: The correlation of the relationship between the number of reaches into the bag and the number of…

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Q: What percentage of the data will fall between 1 standard deviation below the mean and 2 standard…

A: P(-1<z<2)=?

Q: If the seefficient of determination is 0.81, the correlation coefficient

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Q: Fourteen different second-year medical students took blood pressure measurements of the same patient…

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Q: At the end of the semester the lecturer runs a regression using the student's final grade as the…

A: According to the given information, we have the following regression to run Final Grade^=α + β Male…

Q: When Julian runs the 400 meter dash, his finishing times are normally distributed with a mean of 82…

A: Given that  The finishing times are normally distributed. Mean (μ)= 82 seconds Standard deviation…

Q: Suppose the mean height for men is 70 inches with a standard deviation of 2 inches. What percentage…

A: we have to find probability factor and from it value we get value of percentage  X = 74 μ = 70 σ = 2…

Q: What is the R^2 value and describe tue strength of tue correlation

A: r squared is the percentage of variation explained by the relationship between two variables(age and…

Q: The average length of a major league baseball game is 196 minutes with a standard deviation of 8…

A: Given:  The mean length of a major league baseball game is:…

Q: Choose the item from the drop down menu that would be most likely to show a positive correlation to…

A: Here, it is asked to choose the item which most likely to show a positive correlation to the item in…

Q: Describe about Partial Squared Curvilinear Correlation?

A: Partial Correlation: A partial correlation measures the relationship between two variables while…

Q: What is the Correlation?

A: The table shows x and y values.

Q: ​Dr. Smith found a Pearson correlation of +.72 between class attendance and exam scores. To better…

A: Spearman’s rank correlation coefficient:Spearman’s rank correlation coefficient is denoted by ρ. It…

Q: The correlation between years of Training and income in a sample of 20 people from a certain company…

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Q: The temperature recorded at 60 airports in a region had a mean of 67 degrees Fahrenheit and a…

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Q: The correlation coefficient between the number of TV sets per person (X) and average life expectancy…

A: Given information: No. of variables=2Variables=1. No. of TV sets per person (X)2. Average life…

Q: A manufacturing company claims that the average lifetime of their incandescent lamps is 1300 hours.…

A: We have given that data. From data i want to calculated. Mean = sum of all observations/total number…

Q: The co-efficient of value correlation between two prices of a company is + 0.27, if the sum of…

A: Note: the given values in this question is not correct that is why the value of n is not exact.

Q: Solar earned a score of 940 on a national achievement test. The mean test score was 850 wth a…

A: Given that  Solar earned a score of 940. The test scores are normally distributed. Mean test score…

Q: It is believed that the mean number of chronic conditions amongst the elderly is 1.75. A physician…

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Q: What would be the correlation between the annual salaries of males and females at a company if for a…

A: since, man always made $5000 more than women, so if we increase or decrease men salary by x amount,…

Q: The correlation between age and height of biological males is .887. If there are 20 males in the…

A: It is given that n = 20.

Q: How does the squared curvilinear correlation calculated?

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Q: Describe the range of values for the correlation coefficient.

A: Solution: Correlation coefficient: If two variables are said to be correlated if the changes in the…

Q: A study was conducted to determine if the number of hours of sleep per night was related to exam…

A: as given in the question the correlation coefficient in between the number of hours of sleep per…

Q: Show that the correlation coefficient is independent of the origin of reference and the units of…

A: We need to to prove that correlation coefficient is independent of the origin and units of…

Q: Describe the range of vakues for the correlation coefficient.

A: Solution-: We describe the range of values for the correlation coefficient.

Q: The coefficient of correlation between ages of husbands and wives in a community was found to be…

A: Given: Let husband and wives be denoted by x and y. r=0.8x¯=25y¯=22sx=4sy=5

Q: Explain about Squared Curvilinear Correlation.

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Q: The heart rate of humans are normally distributed with a mean of 90.3 bpm and std. dev. of 7.3 bpm.…

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Q: What is your best estimate of the correlation coefficient shown here?

A: A scatter plot provides the idea about the form, direction, and strength of the relationship between…

Q: The number of wins for a high school football team is measured for the season. When the team plays…

A: Given information:  r=-0.11

Q: Give your opinion on this. Greek letters are used for statistics as opposed to parameters.

A: Statistic: If the value is a numerical measurement describing a characteristic of a sample then the…

Q: A used car lot sold 12 minivans last month, along with 54 other vehicles. Considering th data, how…

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Q: The winner for Best Male Actor is 35 years old and winn3er for Best Female Actress is 47.  The mean…

A: The z-score for male actor is, z=x-μσ=35-45.15.9=-10.15.9=-1.71 The z-score for male actor is -1.71.…

Q: An r value of .8 indicates a strong positive correlation.? true or fault

A: Given statement: An r value of 0.08 indicates a strong positive correlation. True or fault?

Q: The correlation should be around zero if the scatter plot reveals a set of data points that form a…

A: From scatter plot we can estimate the correlation Coefficient value

Q: Dr. Song calculates a correlation coefficient of -.14 between the number or pizzas eaten and scores…

A: Correlation coefficient:It measures the relationship between two variables. The range of correlation…

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.