The numbers of absent days a student had in the last five months are {0, 4, 2, 0, 3}. What is the approximate variance of this data? 1.6 H. 2.6 G 1.8 J 2.8

Q: Suppose that (x_1 - x-bar)^2 = 5.19, that (x 2 - x-bar)^2 = 1.39, and (x_3- x-bar)^2 = 1.00. Compute…

A: Given data is appropriate for measures of central tendency to find the variance for the given data.

Q: The performance on a reading test and reading ability in class yield a correlation of approximately…

A: From the provided information, Correlation coefficient (r) = 0.20

Q: True or False? The sample correlation coefficient is equal to the covariance of x and y divided by…

A: The sample correlation coefficient can be calculated as: Where, Sx = standard deviation of x Sy =…

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Q: When can a correlation coefficient based on an observational study be used to support a claim of…

A: When can a correlation coefficient based on an observational study be used to support a claim of…

Q: Select the answer that fits each description. Study to investigate whether more students with hazel…

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Q: If the coefficient of determination is 0.90, the percentage of variation in the dependent variable…

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

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

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Q: Lucky for you, SPSS does provide the variance!  The variance for the "age" variable is _________.…

A: Given : SPSS output

Q: Calculate the missing values, labelled (A) - (D), in this R output, in alphabetical order as…

A: A) The r-square is given by   ​​​​​​​   B) The residual standard error is given by ​​​​​​​

Q: Non parametric tests will _______ data,  a. calculate means b. rank order  c. normalize d.…

A: Solution Non parameteric test are used to compare the median and some other measurements. These test…

Q: Q9 What is the correlation coefficient for these data? Use either the =correl(array1,array2) formul…

A: First I have enter the data in Ms-Excel

Q: Which one of the following statements is.17 ?TRUE The mode of the data 2, 5, 5, 3, 2, 3 is 2, .3 and…

A:

Q: Assume that you walk in a park, and there are 5 types of flowers in the park. You pick at random 1…

A:

Q: X Y 1 7. 4 1 1 6. 0. 6. A. Sketch a scatter plot and estimate the Pearson correlation B. Compute the…

A: Given, The data set which contains 8 observation, having 2 columns x and y. Sr no x y x2 y2 xy…

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.