Research Methods for the Behavioral Sciences (MindTap Course List)
Research Methods for the Behavioral Sciences (MindTap Course List)
6th Edition
ISBN: 9781337613316
Author: Frederick J Gravetter, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Concept explainers

Addition Rule of Probability
It simply refers to the likelihood of an event taking place whenever the occurrence of an event is uncertain. The probability of a single event can be calculated by dividing the number of successful trials of that event by the total number of trials.
Expected Value
When a large number of trials are performed for any random variable ‘X’, the predicted result is most likely the mean of all the outcomes for the random variable and it is known as expected value also known as expectation. The expected value, also known …
Probability Distributions
Understanding probability is necessary to know the probability distributions. In statistics, probability is how the uncertainty of an event is measured. This event can be anything. The most common examples include tossing a coin, rolling a die, or choosi…
Basic Probability
The simple definition of probability it is a chance of the occurrence of an event. It is defined in numerical form and the probability value is between 0 to 1. The probability value 0 indicates that there is no chance of that event occurring and the prob…
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Chapter 3, Problem 8E

A researcher claims that intelligence can be measured by measuring the length of a person’s right-hand ring finger. Explain why this procedure is very reliable but probably not valid.

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Chapter 3 Solutions

Research Methods for the Behavioral Sciences (MindTap Course List)

Ch. 3.1 - Define a construct and explain the role that...Ch. 3.1 - Define an operational definition and explain the...Ch. 3.2 - Define a positive relationship and a negative...Ch. 3.2 - Define the validity of measurement and explain why...Ch. 3.2 - Define the reliability of measurement and explain...Ch. 3.3 - Compare and contrast the four scales of...Ch. 3.4 - Identify the three modalities of measurement and...Ch. 3.5 - Define a ceiling effect and a floor effect and...Ch. 3.5 - Define an artifact and explain how examples of...Ch. 3 - In addition to the key words, you should also be...
Ch. 3 - Hypothetical concepts, such as honesty, are...Ch. 3 - Briefly explain what an operational definition is...Ch. 3 - A researcher evaluates a new cholesterol...Ch. 3 - A clinical researcher has developed a new test for...Ch. 3 - Suppose that a social scientist has developed a...Ch. 3 - Explain how inter-rater reliability is...Ch. 3 - A researcher claims that intelligence can be...Ch. 3 - For each of the following operational definitions,...Ch. 3 - In this chapter we identified four scales of...Ch. 3 - Select one construct from the following list:...Ch. 3 - Describe the relative strengths and weaknesses of...Ch. 3 - What is a ceiling effect, and how can it be a...Ch. 3 - Explain how an artifact can limit the validity and...Ch. 3 - What are demand characteristics, and how do they...Ch. 3 - Describe how the concept of participant reactivity...
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