Question

Scatter plots give a visual representation of the strength and direction of the correlation coefficient. True...

Scatter plots give a visual representation of the strength and direction of the correlation coefficient.

True or False

When you have significant results in data analysis, it is customary to report all relevant means and standard deviations.

True or False

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Scatter plots give a visual representation of the strength and direction of the correlation coefficient.

True.

A scatterplot displays the strength and direction, and form of the relationship between two quantitative variables.The correlation r measures the strength of the linear relationship between two quantitative variables.

When you have significant results in data analysis, it is customary to report all relevant means and standard deviations

False

Statistical hypothesis testing is used to determine whether the result of a data set is statistically significant.

say for example if you have p-value less than the significance level Decision: Reject the null hypothesis.

if you have p-value freater than the significance level Decision: DO NOT REJECT the null hypothesis

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. Which of the following statements is true? The correlation coefficient (r) equals the proportion of...
1. Which of the following statements is true? The correlation coefficient (r) equals the proportion of times two variables lie on a straight line. The correlation coefficient (r) will be +1 only if all the data lie on a perfectly horizontal straight line. The correlation coefficient (r) measures the fraction of outliers that appear in a scatterplot. The correlation coefficient (r) is a unit-less number and must always lie between –1 and +1, inclusive An entomologist writes an article in...
A sample linear correlation coefficient close to ________ would show there is a strong positive linear...
A sample linear correlation coefficient close to ________ would show there is a strong positive linear correlation in the bivariate data. If the probability of event A is equal to 5/12, this probability would be _______ when expressed as a decimal number rounded to the nearest thousandth. The degrees of freedom for a test for the mean when the standard deviation is unknown is equal to the sample size minus one. True or False? A numerical measurement that described some...
Which of the following statements are true of correlation coefficients? Group of answer choices The more...
Which of the following statements are true of correlation coefficients? Group of answer choices The more negative the number is, the weaker the relationship. A correlation coefficient of -0.90 indicates that there is an inconsistent relationship between the variables. The closer the coefficient is to 1 or -1, the weaker the relationship. A correlation coefficient of 0.05 indicates that there is an inconsistent relationship between the variables. Which type of analysis is more flexible than an independent-samples t-test and allows...
A hypothesis test using a Pearson’s correlation coefficient is an example of what? A nonparametric statistic...
A hypothesis test using a Pearson’s correlation coefficient is an example of what? A nonparametric statistic A descriptive statistic An inferential statistic A power statistic 1 points    QUESTION 48 What would the scatter plot show for data that produce a Pearson correlation of r = +0.88? Points clustered close to a line that slopes down to the right Points clustered close to a line that slopes up to the right Points widely scattered around a line that slopes up...
Answer True or False for each of the following. If your answer is FALSE, provide an...
Answer True or False for each of the following. If your answer is FALSE, provide an example that proves your point. If your answer is true, explain. Given a typical set of numerical data with an ODD number of values. 1. The mean is always one of the data values. 2. The median is always one of the data values 3. The mode is always one of the data values. 4. The range measures the variability of the given data...
Fuming because you are stuck in traffic? Roadway congestion is a costly item, both in time...
Fuming because you are stuck in traffic? Roadway congestion is a costly item, both in time wasted and fuel wasted. Let x represent the average annual hours per person spent in traffic delays and let y represent the average annual gallons of fuel wasted per person in traffic delays. A random sample of eight cities showed the following data. x (hr) 29 5 21 36 19 20 19 5 y (gal) 46 3 31 56 32 36 27 9 (a)...
1. Correlations and Scatter Plots The following data set represents avg time per week spent on...
1. Correlations and Scatter Plots The following data set represents avg time per week spent on social media by age for 12 randomly chosen individuals. Age 14 18 27 21 55 46 18 26 15 17 62 41 Time (s) 240 150 135 110 45 72 150 41 200 125 31 52 a. The correlation coefficient between the two variables is found to be r = -0.84, and the standard deviation for each variable are Sage = 16.71 and Stime...
An unexpected economic downturn is likely to have which effect on inventory turnover Increase No effect...
An unexpected economic downturn is likely to have which effect on inventory turnover Increase No effect Decrease Each of these replies is equally likely A client representation letter can be used as a substitute for performing some audit procedures since the information is provided by the client in writing. a. True b. False All of the following are considered in developing an expectation of an account balance except: a. Anticipated results, such as budgets and forecasts b. Relationships between financial...
Discussion question please respond By Day 3 Post a brief explanation of when an observed correlation...
Discussion question please respond By Day 3 Post a brief explanation of when an observed correlation might represent a true relationship between variables and why. Be specific and provide examples. Below you will see a statement that was sent responding to response 1 how would you respond to response two please proive reference like response 1 this is a discussion. Response 1: If you collect India's steel production data and population of 10 consecutive year it will result in a...
Analysis of portfolio returns over a 20-year period showed the statistics below. Click here for the...
Analysis of portfolio returns over a 20-year period showed the statistics below. Click here for the Excel Data File (a) Calculate and compare the coefficients of variation. (Round your answers to 2 decimal places.) Investment Mean Return Standard Deviation Coefficient of Variation   Venture funds (adjusted) 18.4          13.0          %          All common stocks 11.9          12.2          %          Real estate 8.5          17.0          %          Federal short-term paper 6.2...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT