/*! 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 26. Teaching and research A college ... [FREE SOLUTION] | 91影视

91影视

Teaching and research A college newspaper interviews a psychologist about student ratings of the teaching of faculty members. The psychologist says, 鈥淭he evidence indicates that the correlation between the research productivity and teaching rating of faculty members is close to zero.鈥 The paper reports this as 鈥淧rofessor McDaniel said that good researchers tend to be poor teachers, and vice versa.鈥 Explain why the paper鈥檚 report is wrong. Write a statement in plain language (don鈥檛 use the word correlation) to explain the psychologist鈥檚 meaning.

Short Answer

Expert verified

Teaching ratings and research productivity of the faculty members are unrelated to each other.

Step by step solution

01

Given information

Physiologist statement:

"The findings suggests that the relationship between research production and faculty members' teaching ratings is close to zero."

Paper report:

"According to Professor McDaniel, good researchers make lousy teachers, and vice versa."

02

Explanation

Due to the zero value, faculty members' teaching ratings and research production have no bearing on each other.

In other words,

Because of the zero value, faculty members' teaching ratings and research production are unrelated.

Thus,

Higher (or lower) teaching ratings are not always associated with higher (or lower) research productivity.

Similarly,

Faculty members that have a low research productivity are not necessarily those who have a higher (or lower) research productivity.

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

Infant weights in Nahya A study of nutrition in developing countries

collected data from the Egyptian village of Nahyan. Researchers recorded the mean weight (in kilograms) for 170 infants in Nahya each month during their first year of life. A hasty user of statistics enters the data into software and computes the least-squares line without looking at the scatterplot first. The result is weight^=4.88+0.267 (age). Use the residual plot to determine if this linear model is appropriate.

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.

More hot dogs Refer to Exercise 19

a. Explain why it isn鈥檛 correct to say that the correlation is 0.87mg/cal

b. What would happen to the correlation if the variables were reversed on the scatterplot? Explain your reasoning.

c. What would happen to the correlation if sodium was measured in grams instead of milligrams? Explain your reasoning.

Penguins diving A study of king penguins looked for a relationship between how deep the penguins dive to seek food and how long they stay underwater.41 For all but the shallowest dives, there is an association between x = depth (in meters) and y = dive duration (in minutes) that is different for each penguin. The study gives a scatterplot for one penguin titled 鈥淭he Relation of Dive Duration (y) to Depth (x).鈥 The scatterplot shows an association that is positive, linear, and strong.

a. Explain the meaning of the term positive association in this context.

b. Explain the meaning of the term linear association in this context.

c. Explain the meaning of the term strong association in this context.

d. Suppose the researchers reversed the variables, using x = dive duration and y = depth.

Hot dogs Are hot dogs that are high in calories and also high in salt? The

following scatterplot shows the calories and salt content (measured in milligrams of sodium) in 17 brands of meat hot dogs.

a. The correlation for these data is r=0.87 Interpret this value.

b. What effect does the hot dog brand with the smallest calorie content have on the correlation? Justify your answer.

See all solutions

Recommended explanations on Math Textbooks

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.