Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

For each of the following statements, select True if the statement can be verified as true based on the information in the table. Otherwise, select False.

Question is: There is a positive correlation between the number of public museums and the number of visitors per year.

My reasoning for this question: Thrice in the graph the “number of visitors per year” drop while the number of public museum increases. I have marked it above. So, can you please help me in understanding how it is a positive correlation ? Am I missing something ?

Thanks & Regards Vinni

Attachments

IR - European Museums.JPG [ 38.04 KiB | Viewed 2243 times ]

Except for 3 entries when the "public" goes up, "the number of visitor" goes up; that's why correlation is POSITIVE. Please notice that the quetion did not ask if the correlation was equal to "1" (for example). So you can accept also few values that are not similar to the trend.

I dont think we can say that the correlation is positive when there are a few entries missing the trend. Can experts please help and clarify if the answer can actually be true basis thr reasoning presented above?

If you plot the points on a graph, you will get a scatter plot. Taking the line of best fit and you will see that this line has a positive gradient hence a positive correlation.

A perfect positive correlation means that 100% of the time, the relationship that appears to exist between two variables is positive. It is also possible for two variables to be positively correlated in some, but not all, cases.

This is what you get when you plot a scatter plot.

Rgds, Rajat

Attachments

Post 30_ScatterPlot.png [ 13.34 KiB | Viewed 1571 times ]

_________________

If you liked the post, please press the'Kudos' button on the left