Answered: 24. When the connected points on a…

24. When the connected points on a scatterplot make a perfect y=x line, what is its (correlation) r-value? Group of answer choices r = -1 r = 0 r = 1 r = 0.5

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Indicate which correlation coefficient represents a stronger relation between two variables. +.65 O…

A: The correlation coefficient depicts the relationship between the two variables. A higher correlation…

Q: 10. The director of an alumni association for a small college wants to determine whether there is…

A: N=6 Data is given for contribution according to years. We have to calculate correlation coefficient…

Q: Given the graph and information, how would you interpret the correlation the correlation between…

A: Correlation The correlation analysis (r) is a method to determine the relationship between two…

Q: 2) Analyze the graph and estimate the correlation. 100 80 60 40 20 10 20 30 Exam Score

A: In the context, the scatter plot for number of missed classes and Exam score. The scatter plot…

Q: 3. Explain the methods used to measure the association between variables.

A: The methods used for measuring the association between variables must be determined.

Q: Rick is a school principal, and he is trying to decide if there is a relationship between conduct…

A: We plot number of infractions on x-axis and number of student present in the school on the y-axis.

Q: Identify if the following correlation. Describe if it is strong, weak, or no correlation. Then…

A: Given: n = 29 Formula Used: Correlation coefficient r = n∑XY-∑X∑Yn∑X2-∑X2n∑Y2-∑Y2

Q: Suppose that the correlation between the scores of students on Exam 1 and Exam 2 in a statistics…

A: We have given that Correlation=r=0.7 Find coefficient of determination

Q: Match the linear correlation coefficient to the scatter diagram. 1= -0.764 Choose the correct graph…

A: If the values of correlation is between -0.7 and -1 then the relation is negative and strong. The…

Q: 8) ŷ = 0.36 for the relationship between income (below average, average, above average) and…

A: Given: Gamma cap : measure of association between income and happiness = 0.36 95% CI of gamma = […

Q: correlation of r = 0.5 indicates Select one: a. a positive and strong relationship between two…

A: As we know, r→1⇒strong correlation r→0⇒No correlation r→0.5⇒Moderate correlation…

Q: Below are four r values. Please put them in order from weakest to strongest: .66 -.79 .11 -27 Please…

A: Part a: At r = 0 , there exist no linear correlation if r ≤ ±0.5, it shows a rather weak…

Q: The ages (in years) of 10 men and their systolic blood pressures (in millimeters of mercury) are…

A: Given informationThe ages of 10 men and their systolic pressure are given in table, and their…

Q: The ages (in years) of 10 men and their systolic blood pressures (in millimeters of mercury) are…

Q: 7) Please answers in the space provided. Arrange the labels for each scatterplot in order from…

A: Arrange the labels for each scatterplot in order from weakest correlation to strongest correlation

Q: Suppose a researcher collects data on the gas mileage, measured in miles per gallon, for both city…

A: This car is an influential observation.

Q: 1. ● (F) ● A researcher wants to see if the amount of water a person drinks relates to the…

A: Given Information: Consider the given dataset: Temperature Water consumption 72 15 84 23 87…

Q: 5. Use the data set to answer the following: {(0,2), (2,5), (-8,19)} a. Find the coefficient of…

A: Given data set: {(0,2),(2,5)(-8,19)}

Q: A newspaper collected information on schools in its circulation area in order to compare their…

A: Introduction: A scatterplot is considered, with the mean class size or mean number of students along…

Q: What would be the predicted stock return for a company whose CEO made $15 million % (Type an integer…

A: We have used the excel data analysis tool to run the regression analysis.

Q: Given the following pairs of value of the variables: Advertisement expenses and revenue generation…

Q: The following data are the amounts that a sample of 15 customers spent for lunch ($) at a fast-food…

A: Given: Sample size, n = 15 Data :…

Q: se the sample data to construct a scatterplot. Use the first variable for the x-axis. Based on the…

A: A scatter plot is a graphical representation of two variables to investigate if there exists an…

Q: For each problem, select the best response. (a) In a scatterplot of the average price of a barrel of…

Q: 2. Consider the following examples; would you expect the correlation coefficient to be close to 1,…

A: The objective of the question is to understand the correlation coefficient between different…

Q: The correlation between midterm and final grades for 300 students is 0.620. If 5 points are added to…

A: Correlation Coefficient: Let (x1, y1), (x2, y2), ... , (xn, yn) be n set of observations for the…

Q: Jim and Larry run a soup stand. The data below represents the sales of soup that they had on 8…

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

Q: 7. Use the graphs below to answer (a) and (b) 4- 2. 1. 1 4 6 7 8 1 3 4 7 X LEFT RIGHT a. Which graph…

A: we have to choose graph for given conditions.

Question

24. When the connected points on a scatterplot make a perfect y=x line, what is its (correlation) r-value?

Group of answer choices

r = -1

r = 0

r = 1

r = 0.5

Definition Definition Relationship between two independent variables. A correlation 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.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Mentioning the given data

VIEW

Step 2: Choosing the correct option

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

Use the data in the table, which shows the average annual salaries (both in thousands of dollars) for public school principals and teachers in the U.S. for 11 years. Apply what you have learned in the previous tab to complete this graded lab questions. 1. Repeat the steps from tab #1 using this data to construct a scatter plot graph and calculate the correlation coefficient R. (Recall the corelation coefficient is R and not R Teachers y Principalsx 77.8 43.7 78.4 43.8 80.8 45.0 R= 80.5 45.6, 2. Does the R value represent a positive, negative or no correlation between the salaries ol the teachers and principals? As teacher salaries increase, what happens to prinicipal salaries? 10 11 81.5 45.9 84.8 48.2 12 13 87.7 49,3 3. Write the equation of the regression line for the data below. The equation is y= 14 91.6 51.3 52.9 Teachers y 15 16 95.7 54.4 COD 54.2 =D0.5873x-2.0s07o R=0.995, 17 95.7 4. Use the regression equation that you found in exercise #3 to predict the average annual salary…
Solve all parts , second photo is the graph that was requested.
Give an example of two variables that you would expect to have a correlation close to or equal to -1. Give an example of two variables that you would expect to have a correlation close to or equal to 0. Remember that survey question you wrote? Take the class responses to your survey as data related to the one variable of your question. Now, take the list of responses from the survey question that one of your classmates wrote. Write down both lists of data. (If one sample size happens to be different from the other, cut the larger sample size down to that of the smaller sample size.) Calculate the correlation between the two variables. Describe the linear relationship between these two variables. (data for number 3) How many cars have you had so far in your lifetime? 0,1,1,1,2,2,2,2,3,3,3,3,4,4,5,6,6,7,10. How many days per week do you exercise? 0,0,0,1,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6
a teacher asked her students how many hours of sleep they had the night before a test. what type of correlation does your graph show? Determine a equation line of best fit BY HAND using the points 7,90 nd 6,76. hours slept : 8 7 7 8 6 5 7 4 9 7 score 83 86 74 88 76 63 90 60 89 81
16. In comparing the relationship between rainfall and hot dog sales, a student finds the correlation to be r = -0.56. What is the best description of the relationship between these two sets of data? Group of answer choices Negative and Strong Positive and Weak Negative and Moderate Positive and Moderate
Q4. What is the true interpretation for R Square? A) 49% of the correlation of GDP per capita explains by independent variables. B) 49% of the correlation of independent variables can explain by GDP per capita. C) 49% of the variation of GDP per capita explains by independent variables. D) 49% of the auto-correlation of independent variables can explain by GDP per capita.
Suppose a researcher collects data on the air pollution levels, measured in milligrams per cubic meter, for both urban and rural areas in 35 states. The data is plotted with urban air pollution levels on the horizontal axis and rural air pollution levels on the vertical axis. Nevada is an outlier in the ?x‑direction. What must be true about this state? The urban air pollution levels for this state are much higher or lower than the rest of the states in the data set. The rural air pollution levels for this state are much higher or much lower than the rest of the states in the data set. This state is an influential observation. The rural air pollution levels for this state are much higher or lower than other states in the data set that have similar urban air pollution levels. The absolute value of the residual of this state is large.
Solve.
Q1. A psychologist conducted a study on the relationship between introversion and shyness. The values are results for scales of introversion and shyness. High positive scores on each scale indicate high introversion or shyness; and high negative scores indicate low introversion or shyness. Data collected from 10 people as follows: Introversion 4 -7 -1 0 6 7 -4 -9 -5 8 Shyness 11 -7 -1 -3 0 7 -1 -8 -1 5 a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?