Assumptions for pearson correlation

Assignment Help Basic Statistics
Reference no: EM1315618

Suppose that a researcher does a study to see how level of anxiety (A1 = low, A2 = medium, A3 = high) is used to predict exam performance (Y). Would it be appropriate to do a Pearson correlation (or linear regression) between Anxiety, coded 1, 2, 3 for (low, medium, high) and exam score? Why or why not?

Reference no: EM1315618

Multiple regression models using spss

Set up dummy coded dummy variables to contrast each of the other groups to Group 2, medium Anxiety; run a regression to predict exam performance (Y) from these dummy coded d

Introduction of one way analysis of variance

Suppose that a researcher does a study to see how level of anxiety (A 1  = low, A 2  = medium, A 3  = high) is used to predict exam performance (Y).

Degrees of freedom for chi-square test of goodness of fit

One use of the Chi-square goodness of fit test is to determine if specified multinominal probabilities in the null hypothesis is correct.

Sample mean and standard deviation

Shows a sample mean of 1,261 with a standard deviation of 59. Should Pennsylvania adopt the new system for all toll roads in the state?

Determining standard deductions with standard deviation

Survey of 16 tax returns reports families with incomes between $75,000 and 100,000 have on average $8,562 in Standard Deductions with the standard deviation of $1,800.

Bar chart and expected frequencies for each class

Advertisers need to know which age groups are likely to see their ads. Purchasers of 120 copies of Cosmopolitan are shown by age group, (a) Make a bar chart and describe it.

Hypothesis testing by chi-square distribution

Advertisers need to know which age groups are likely to see their ads. Purchasers of 120 copies of Cosmopolitan are shown by age group Perform the chi-square test for a unif

Confidence interval for a regression coefficient

The following table shows the hardness (in Brinell hardness numbers) and the tensile strength (in thousands of pounds per square inch) of ten specimens of a certain alloy.

Reviews

Write a Review

 
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd