A professor wants to see the relationship between class size and final exam performance. Class Size (X) Final Exam (Y) 25 80 14 98 33 50 28 82 20 90   The following have whole number answers. As such please write only the number and not any decimal. For example write "1" and not "1.0". If any answer is negative, put the negative sign in front of the answer. For example write "-1".    What is ΣXY?                What is ΣX?                  What is ΣY?                   What is SP?                   What is SSx?                                 What is SSy?                 What is the Pearson Correlation (r)?

Q: A dataset of a class contains a variable that shows the school year of a student: freshman,…

A: Step 1: Make a frequency distribution table for each class of the variable as below: Variable…

Q: 3.6 x 1012 is the product of 2.4 x 10 and what number expressed in scientific notation? Use the…

A:

Q: what is the algebraic rule if the coordinate is translated 9 units to the right and 11 units up?

A: Given,          The coordinate is translated 9 units to the right and 11 units up.

Q: Use the information about the camera shown here to answer the question below. Turning the control…

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Q: 50 60 96 74 98 Construct a stem-and-leaf display, given the following data from a sample of midterm…

A:

Q: What would be the notation for the mean of the x values?

A: From the given information, the values are denoted by the variable x.Let us consider the number of…

Q: The table below gives the advertising revenue of Twitter for the years 2010 through 2012. The x…

A: Solution : Solving using difference method, x y first difference Second difference Third…

Q: MULTIPLE SELECT: Which of the following words mean the same as the y-value? Select three. A: input…

A: Simple y value problm....

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Q: Find grade of 25 student in math class are  AAABBBBBBBBCCCCCCCCCDDFFF Make frequency table ,…

A: Given: Number of students = 25 The grades are A, A, A, B, B, B, B, B, B, B, B, C, C, C, C, C, C, C,…

Q: The mean of the numbers y1, y2, y3 and y4 is 10.4. Find the mean of the numbers 10 + y1, 10 + y2, 10…

A: Given information:   Mean of numbers y1, y2, y3, y4=10.4Sum of numbers y1, y2, y3, y4=10.4*4y1+ y2+…

Q: A dataset of a class contains a variable that shows the school year of a student: freshman,…

A:

Q: Evaluate each expression with a calculator. Round answers to the nearest hundredth. (a) Vī.2 + ' 3.2…

A: GIVENa).1.23+π3b).3.2+5.77.9-4.5c).52+2.1d).1.2(6.3)2+3.2π-1 we need to find the values and Round…

Q: The histogram to the right represents the weights​ (in pounds) of members of a certain​ high-school…

A: Given that, The histogram to the right represents the weights​ (in pounds) of members of a certain​…

Q: Illustrate the Quotient Rule ?

A: To illustrate: Quotient Rule Quotient rule is given as: If the two functions f(x) and g(x) are…

Q: What percentage of the variation in y can be explained by the corresponding variation in x and the…

A: Consider the following calculations:…

Q: Write -9.408e10 in both scientific notation and standard form

A: -9.408e10 Scientific notation is, -9.408×1010

Q: Name the term that best describes the notation. 1 Purple Line 2 Red line 3 Blue line 4 Green line S…

A: To find the terms that best describes the notation

Q: 3. The current temperature is -7°C. The high temperature yesterday was as many degrees above 0°C as…

A:

Q: The histogram to the right represents the weights (in pounds) of members of a certain high-school…

A: Solution: Given information: Highest value = 175  Lowest value = 105 Number of classes = 7

Q: Find the value of ODOO to

A:

Q: Example of 25 cities have been classified as higher low on their homicide rates and on the number of…

A: N=25 fo=8,4,5,8 fe=6.24,5.76,6.76,6.24 r=2 c=2

Q: An environmentalist wants to determine the relationships between the numbers (in thousands) of…

A: The following information has been given: Number of fires (x) Number of acres burned (y) 72 62…

Q: Match these values of r with the accompanying scatterplots: 0.42, - 0.781, - 1, 1, and 0.995. Click…

A: Scatter diagram: It is used to examine the relationship between y variable and x variable.…

Q: P(A) = .2000 %3D P(B) = .1000 %3D P(A | B) = .2500 Find P(A and B).

A: We have given that, P(A) = 0.2000 ,   P(B) = 0.1000 and  P(A/B) = 0.2500   We know that, P(A/B) =…

Q: Briefly explain indefinite number

A:

Q: LeBron James LeBron James, one of the best professional basketball players ever, has a height of 203…

A: Given: Population mean μ = 176 Population standard deviation σ = 6 Formula Used: Z-score = X-μσ

Q: latch these values of r with the accompanying scatterplots: 0.341, - 0.737, 0.737, 1, and - 1. Click…

A: Solution: The main purpose of Scatterplot is to used for showing or identifying the linear…

Q: Health The body mass index (BMI) is a number that can be calculated for any individual as follows:…

A: The partial derivative of any function with multiple variables can be found by derivating the…

Q: Evaluate the expression. 8

A: Given expression is (n8)

Q: Evaluate the expression

A:

Q: The final letter grades earned on a mathematics course are given in the table below. A B C D F 12 20…

A: Given data  A 9 B 12 C 20 D 10 F 4 W 5

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.