Determining the correlation coefficient
Course:- Basic Statistics
Reference No.:- EM131157459

Assignment Help
Expertsmind Rated 4.9 / 5 based on 47215 reviews.
Review Site
Assignment Help >> Basic Statistics

1. Give an example of a number that cannot be a correlation coefficient (Pearson's r) and is a negative number.

2. Interpret the following statement. A researcher collected data on the correlation between grades in a course and the number of absences in the classroom. The r = -.38.

a. Write a sentence interpreting these findings.

b. Write another sentence explaining the findings if the other variable is the number of hours spent working per week and the r = .06.

3. What must the P-value be in order to reject it? Explain yourself.

4. What affects the probability of a Type II error?

5. What could be the issues of a researcher not finding any statistical significance in their research results?

Put your comment

Ask Question & Get Answers from Experts
Browse some more (Basic Statistics) Materials
A medical research team studied the ages of 34 patients who had strokes caused by stress. The frequency distribution below summarizes the results. When trying to understand
The sample data will be used to form a confidence interval. Explain which one of the given combinations of sample size and confidence level will give the widest interval.
For some of the attributes in your computer decision, you face uncertainty. The additive utility function assessed in Problem 15.17 essentially assumes that additive indepen
A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 67%.
The scores on the certain test are "normally distributed with mean 61" and "standard deviation 3". Determine the probability that the sample of 100 students will have the me
The SAT scores of students are normally distributed with a mean of 950 and a standard deviation of 200. Nancy Bright's SAT score was 1390. What percentage of students have sco
Alternative work arrangements are varied and a popular option in today's workplace. Based on the reading in this chapter, discuss which of the alternative work arrangement o
Suppose that you take a random sample of 10,000 Americans and find that 1,111 are left- handed. You perform a test of significance to assess whether the sample data provide