also:e. Draw the scatter plot of the data shownf. interpret the graph relating to the topic on correlation Lesson 1: CorrelationExample 7: Brain Size and IntelligenceP 203, #21. Researchers interested in whether a person's brain size isrelated to mental capacity selected a sample of 20 students who hadSAT scores higher than 1350 and administered an IQ test. Brain sizewas determined by an MRI scan.MRIMRI(d) Calculate theGender CountGenderCountcorrelationFemale 816932 133Male949395140coefficientFemale 951545 137Male1001121140separately for males Female 991305 138Female 833868 132Male1038437139Male965353133and females. DoFemale 856472 140Male955466133you still believe thatMRI count and IQare linearly related?Female 852244 132Male1079549141Female 790619 135Male924059135Female 866662 130Male955003139Female 857782133Male935494141Female 948066 133Male949589144Unit 2: Probability Distributions

Introduction: The MRI Count, which gives an estimate of the brain size, is the independent variable,…

Answered: Lesson 1: Correlation Example 7: Brain…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The variables on a date base have a strong correlation. What of the following correlations coefficients match the date? I. -3.2 II. -0.92 III. -0.3 IV. -0.99
Use the data values in the table below to calculate the correlation between the variables x and y. Submit the link through Canvas to either a photo of your work on paper or a link to a google sheet. y 5 2.86 4.48 7 3 8. 3.92 3.34 10 0.96 11 2.38 12 2.8 Give your answer to three decimal places. Submit Question 6.
2) The following data show Transportation Budget for North Carolina (Let year 1- 2003) Year Budget (in millions) 2003 385 2004 397 2005 452 2006 501 2007 446 2008 450 2009 593 2010 654 2011 846 2012 911 2013 1483 2014 1897 a) Create a scatter plot and be sure to LABEL BOTH axis and give the chart an overall name. Have the graph display the "r-value" and the correct equation. b) What kind of correlation is this? c) Is this more of a linear or exponential model? Why? d) Predict the budget for 2020
Illustration 15.16. A group of ten workers of a factory is ranked . according to their efficiency by two different judges as follows: Judgement of Judge A Judgement of Judge B Name of Worker A 4 3 8. 6. 6. 7 E 1 1 F 3 2 4 5 7 I 10 J 9. 10 Compute the coefficient of rank correlation.
Consider the following graph. What can you say about correlation of x and y? Course Grade vs. Absencies 100 80 60 40 20 2 6. 10 12 14 16 O A weak negative correlation OA strong negative correlation O A weak positive correlation O A strong positive correlation O No correlation
A strong positive correlation means: the points in a scatter diagram lie on a downward sloping line O the points in a scatter diagram lie on an upward sloping line O ris close to -1 O ris close to 1
At a local supermarket, a group of taste-testers were asked to rate a new food product on a scale of 1 to 5, ranging from bad taste through excellent taste. Identify the most appropriate graph to describe the given data. histogram scatterplot bar graph stem-and-leaf plot
The amygdala is a brain structure involved in the processing and memory of emotional reactions. In a research project, 10 subjects were shown emotional video clips. They then had their brain scanned with positron emission tomography (PET) and their memory of the clips was assessed quantitatively. Here are the relative amygdala activity and the memory score for each subject: The relationship is (Linear or curved) and ( Moderate, weak, or strong)? The direction of the realtionship is (Negitive or positive)? The amygdala and memory 3/4: The correlation coefficient between relative activity and memory score is: (round your answer to 3 decimal places)
The following data gives the number of hours 10 students spent studying and their corresponding grades on their midterm exams, Hours spent studying 0.5 1 1.5 2 2.5 4 4.5 5 5.5 6 Midterm Grades 63 69 75 78 81 84 90 93 96 99 Draw a scatter plot of the given data. Select a location in the chart to plot a point. Points can be moved by dragging or using the arrow keys. Estimate the correlation in words: positive, neagative, no correlation Calculate the correlation coefficient, r. Round your answer to three decimal places. Hours unspervised 0 1 2 4 5 Overall Grades 100 92 88 84 72 Calculate the correlation coefficient, r. Round your answer to three decimal places. Determine whether the given correlation coefficient is staatically significant at the specified level of significance and sample size. r=0.452 ,a=0.005, n=28
B). Using the linear correlation coefficient found in the previous step, determine whether there is sufficient evidence to support the claim of a linear correlation between the two variables. Choose the correct answer below. C) Identify the feature of the data that would be missed if part (b) was completed without constructing the scatterplot. Choose the correct answer below. A. The scatterplot reveals a distinct pattern that is a straight-line pattern with positive slope. B. The scatterplot does not reveal a distinct pattern. C. The scatterplot reveals a distinct pattern that is a straight-line pattern with negative slope. D. The scatterplot reveals a distinct pattern that is not a straight-line pattern. Clear
For each graph describe the correlation as none, weak, or strong and positive or negative .
What kind of relationship is depicted in the following graph? 7 2 1 0 2 3 a. A positive linear correlation b. A nonlinear correlation c. No correlation Od. A negative linear correlation 6 9 10

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