6. Investigate the association between eye colour of husbands and eye colourof wives from the data given below :Husbands with light eyes and wives with light eyesHusbands with light eyes and wives with not-light eyes A= 214Husbands with not-light eyes and wives with light eyesHusbands with not-light eyes and wives with not-light eyes = 119(a)3D309=D132oaas ylavilegen O

Answered: Image /qna-images/answer/02dc2bbf-c9ba-475f-b51a-995b09593ca5.jpg

Answered: 2 6. Investigate the association…

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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Similar questions

Which of the following values is most likely to represent the correlation coefficient for the data shown in this scatterplot? a. r = .06 b. r = .90 c. r = -.10 d. r = .67
What is Pearson's r correlation coefficient for a set of data with the following values: X = [1, 2, 3, 4, 5], and Y = [2, 4, 6, 8, 10]?
For each of a number of cities across Canada, the number of people with Cantonese as a mother tongue and the number of people with Mandarin as a mother tongue were rocorded. A scatterplot of the data is shown in the figure below. The correlation between the number of Cantonese speakers in a city aud the number of Mandarin speakers is 0.980. Do you think this correlation is a reasonable summary of the relationship? Why, or why not? (a) If the two largest cities (Toronto and Vancouver) were removed, the correlation would be even higher. (b) No, because there are outliers and/or influential points. (c) Yes, because the relationship is more or less linear. (d) No, because the relationship is clearly curved. (e) Yes, because there are no influential points.
Suppose a researcher is interested in examining the relationship between a person 's age and whether he or she likes the taste of cilantro. She collects a sample of n- 10 people and asks them whether they like the taste of cilantro. The following table summarizes the results. Does not like Cilantro Does like Cilantro 18 years old 2 18+ years old 3 The researcher wants to calculate the correlation between a person 's age and whether he or she likes the taste of cilantro. To do so, you (the researcher) must first create a table of the data by converting each variable to a numerical value. Assign a 0 to "< 18 years old" and 1 to "18+ years old." Then assign O to "does not like the taste of cilantro" and a 1 to " likes the taste of cilantro." Complete the top two rows of the your (the researcher's) data. Age (0 is <18; 1 is 18+) Likes the taste of Cilantro (0 is no; 1 is yes) a) ob) 1 a) Ob) 1 a) ob) 1 a) Ob) 1 1 1 1 1 1 1 1 The phi-coefficient is a) -0.09 b) -0.16 c) -0.20 d) 0.80
82. What is the linear correlation coefficient, r, for the following set of sample data? 0.8468 0.9747 0.9257 0.9621
2. A researcher performed a Pearson correlation analysis on the variables anxiety, wellbeing and stress to identify if they were correlated. The researcher performed the analysis in Jamovi and obtained the below table. Report the results of this analysis. Correlation Anxiety Wellbeing Stress Anxiety Pearson's r p-value Wellbeing Pearson's r -0.19 p-value 0.060 99 Stress Pearson's r 0.75 0.04 p-value < .001 0.720 N 99 99 |||
In the previous problem, there was a correlation of .62 between hours spent playing video games and hand-eye coordination. What percent of the variance in hours spent playing video games is accounted for by hand-eye coordination? Group of answer choices .62 .05 cannot be determined from information given .38
d) Correlation by eye Sample size=45 y 20- 15- og 8. 10- 5. 10 15 20 25 X Try to guess the sample correlation within +/- 0.1 Guess: Correlation: Sample coeficient of correlation a o 00 00
2. Two types of instruments for measuring the amount of sulfur monoxide in the atmosphere are being compared in an air-pollution experiment. Researchers wish to determine whether the two types of instruments yield measurements having the same variability. The readings in the following table were recorded for the two instruments. Sulfur Monoxide Instrument A Instrument B 0.87 0.74 0.63 0,82 0.75 0.61 0.55 0,76 0,70 080 0.64 0.81 0,68 0,69 0.57 0,65 0,53
The ages of the runners in a race and their finishing positions are given in the following table. Assuming x is the finish position and y is the person's age, is there a significant correlation between age and finishing position? Answer Choices Not significant Not one of these Significant at both 5% and 1% Significant at 5% but not 1% Significant at 1%
2. The correlation between the price indices of animal feeding-stuffs and home-grown cats in a sample of 60 members is 0.68. Could the observed value have arisen: (a) from an uncorrelated population? (b) from a population in which true correlation was 0-8?
10. Describe the pattern of data that is observed when there is a strong negative correlation between X and Y.

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