/*! 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} Q R3.6. Calculating achievement a study ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 3: Q R3.6. (page 214)

Calculating achievement a study found a strong link between the number of calculators possessed by high school pupils and their arithmetic proficiency, according to the principle of a high school. Based on this study, he decides to buy each student at his school two calculators, hoping to improve their math achievement. Explain the flaw in the principal鈥檚 reasoning.

Short Answer

Expert verified

because correlation does not imply causality, we cannot be certain that the number of calculators owed is the cause of the higher math scores.

Step by step solution

01

Given information

A study found a strong link between the number of calculators possessed by high school pupils and their arithmetic proficiency, according to the principal of a high school.

02

Explanation

If there is a strong correlation between the number of calculators owned by higher students and their math achievements, then there is a strong correlation between the number of calculators owned by higher students and their math achievements. However, because correlation does not imply causality, we cannot be certain that the number of calculators owed is the cause of the higher math scores.

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

Which of the following statements is not true of the correlation r between the lengths (in inches) and weights (in pounds) of a sample of brook trout?

a. r must take a value between 鈭�1 and 1.

b. r is measured in inches.

c. If longer trout tend to also be heavier, then r > 0.

d. r would not change if we measured the lengths of the trout in centimeters instead of inches.

e. r would not change if we measured the weights of the trout in kilograms instead of pounds.

Longer strides In Exercise 43, we summarized the relationship between x =

height of a student (in inches) and y = number of steps required to walk the length of a school hallway, with the regression line y^=113.6鈭�0.921x. For this

model, technology gives s = 3.50 and r2 = 0.399.

a. Interpret the value of s.

b. Interpret the value of r2.

Movie candy Is there a relationship between the amount of sugar (in grams) and the number of calories in movie-theater candy? Here are the data from a sample of 12 types of candy:

a. Sketch a scatterplot of the data using sugar as the explanatory variable.

b. Use technology to calculate the equation of the least-squares regression line for predicting the number of calories based on the amount of sugar. Add the line to the scatterplot from part (a).

c. Explain why the line calculated in part (b) is called the 鈥渓east-squares鈥� regression line.

Starbucks The scatterplot shows the relationship between the amount of fat (in grams) and the number of calories in products sold at Starbucks.11 Describe the relationship between fat and calories for these products.

Actual consumption Refer to Exercise 48. Use the equation of the least-squares regression line and the residual plot to estimate the actual fuel consumption of the car when driving 20 kilometers per hour.
See all solutions

Recommended explanations on Math Textbooks

Applied Mathematics

Read Explanation

Decision Maths

Read Explanation

Probability and Statistics

Read Explanation

Logic and Functions

Read Explanation

Calculus

Read Explanation

Geometry

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.