/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none}

91影视

Log out

Learning Materials

Features

Discover

Chapter 1: Q27 (page 11)

What鈥檚 Wrong? In Exercises 25鈥�28, identify what is wrong.

Motorcycles and Sour Cream: In recent years, there has been a strong correlation between the per capita consumption of sour cream and the number of motorcycle riders killed in non-collision accidents. Therefore, consumption of sour cream causes motorcycle fatalities.

Short Answer

Expert verified

Correlation cannot assure the cause of the relationship.

Step by step solution

01

Given information

Two variables are strongly correlated:

  • Per capita consumption of sour cream
  • Motorcycle riders killed in non-collision accidents
02

Correlation interpretation

Two strongly correlated variables show a very strong linear pattern of association. Thus, the slope of the line that describes the relationship between two variables has a steep measurement.

03

Identifying the wrong element in the survey

If one variable is correlated with another, it does not guarantee that one can cause changes in the other.

In the study, it is known that consumption of sour cream is strongly related to non-collision accidents. However, it does not imply that consumption of sour cream causes motorcycle fatalities.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

In Exercises 21鈥�24, refer to the data in the table below. The entries are white blood cell counts (1000 cells,ML) and red blood cell counts (million cells,ML) from male subjects examined as part of a large health study conducted by the National Center for Health Statistics. The data are matched, so that the first subject has a white blood cell count of 8.7 and a red blood cell count of 4.91, and so on.

Context Given that the data are matched and considering the units of the data, does it make sense to use the difference between each white blood cell count and the corresponding red blood cell count? Why or why not?

Determine whether the given source has the potential to create a bias in a statistical study.

Chocolate: An article in the Journal of Nutrition (Vol. 130, No. 8) noted that chocolate is rich in flavonoids. The article notes 鈥渞egular consumption of foods rich in flavonoids may reduce the risk of coronary heart disease.鈥� The study received funding from Mars, Inc., the candy company, and the Chocolate Manufacturers Association.

In Exercises 21鈥�24, refer to the data in the table below. The entries are white blood cell counts (1000 cells,ML) and red blood cell counts (million cells,ML) from male subjects examined as part of a large health study conducted by the National Center for Health Statistics. The data are matched, so that the first subject has a white blood cell count of 8.7 and a red blood cell count of 4.91, and so on.

Subject


12345
White8.75.97.36.25.9
Red4.915.594.444.85.17

Conclusion: If we analyze the sample data and conclude that there is a correlation between white blood cell counts and red blood cell counts, does it follow that higher white blood cell counts are the cause of higher red blood cell counts?

Determine whether the sampling method appears to be sound or is flawed.

Clinical Trials. Researchers at Yale University conduct a wide variety of clinical trials by using subjects who volunteer after reading advertisements soliciting paid volunteers.

Determine whether the data are from discrete data or continuous data set.

CHIS :Among the subjects surveyed as part of the California Health Interview Survey (CHIS), several subjects are randomly selected and their heights are recorded.
See all solutions

Recommended explanations on Math Textbooks

Statistics

Read Explanation

Logic and Functions

Read Explanation

Applied Mathematics

Read Explanation

Mechanics Maths

Read Explanation

Pure Maths

Read Explanation

Discrete Mathematics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.