Question 1

When reporting growth data,the most useful measure of central tendency is the:

Accepted Answer

A) arithmetic mean 
B) mode 
C) median 
D) geometric mean 
A) arithmetic mean 
B) mode 
C) median 
D) geometric mean

Question 2

Note several steps researchers can take to optimize the power of their statistical tests.

Accepted Answer

Suggestions may include the following: -

Question 3

Danzell is a purchasing agent for a major grocery store chain.He has noticed over the years that the higher the outdoor temperature,the more likely people are to buy fresh fruit.Based on Danzell's observations,we would say the correlation between outdoor temperature and buying of fresh fruit is:

Accepted Answer

A) positive. 
B) negative. 
C) causal. 
D) moderate. 
A) positive. 
B) negative. 
C) causal. 
D) moderate.

Question 4

A medical researcher is concerned about mistakenly concluding that a new medication is effective when it really is not.What type of error is the researcher concerned about making (Type I or Type II)? Describe what the researcher might do to decrease the likelihood of making that type of error.Discuss ramifications of your suggested approach for other types of error in the study.

Accepted Answer

The researcher is concerned about making

Question 5

When conducting a meta-analysis,a researcher will typically:

Accepted Answer

A) identify interval estimates for the population parameters. 
B) reject the null hypothesis and conclude there's a significant effect. 
C) compare the effect sizes for a set of independent studies on a single topic. 
D) use nonparametric statistical techniques. 
A) identify interval estimates for the population parameters. 
B) reject the null hypothesis and conclude there's a significant effect. 
C) compare the effect sizes for a set of independent studies on a single topic. 
D) use nonparametric statistical techniques.

Question 6

In a normal distribution,approximately what percentage of scores falls between one standard deviation below the mean and one standard deviation above the mean?

Accepted Answer

A) 16% 
B) 50% 
C) 68% 
D) 90% 
A) 16% 
B) 50% 
C) 68% 
D) 90%

Question 7

Marialexa conducts an economic study and asks her participants to provide information about their family incomes.First,they are asked to check one box from a list of three,indicating whether they consider themselves low-income,middle-income,or high-income.She refers to this as the self-identification variable.Then,they are asked (if they are willing)to provide their annual income in dollars.She refers to this as the dollar-figure variable.The study is both confidential and anonymous,and most people answer both questions.Which of the following statements accurately describes the data Marialexa collects?

Accepted Answer

A) The self-identification data are ordinal data and the dollar-figure data are ratio data. 
B) The self-identification data are nominal data and the dollar-figure data are ratio data. 
C) The self-identification data and the dollar-figure data both are interval data. 
D) The self-identification data and the dollar-figure data both are ratio data. 
A) The self-identification data are ordinal data and the dollar-figure data are ratio data. 
B) The self-identification data are nominal data and the dollar-figure data are ratio data. 
C) The self-identification data and the dollar-figure data both are interval data. 
D) The self-identification data and the dollar-figure data both are ratio data.

Question 8

A distribution of scores that is positively skewed will have a small number of scores that

Accepted Answer

A) are very high. 
B) are very low. 
C) are clustered around the midpoint. 
D) are all the same. 
A) are very high. 
B) are very low. 
C) are clustered around the midpoint. 
D) are all the same.

Question 9

After completing planned analyses,the researcher must interpret the results of statistical tests.Note several steps that are involved in such interpretation.

Accepted Answer

Steps may include the following: -Relate

When reporting growth data,the most useful measure of central tendency is the:

Note several steps researchers can take to optimize the power of their statistical tests.

Danzell is a purchasing agent for a major grocery store chain.He has noticed over the years that the higher the outdoor temperature,the more likely people are to buy fresh fruit.Based on Danzell's observations,we would say the correlation between outdoor temperature and buying of fresh fruit is:

When conducting a meta-analysis,a researcher will typically:

In a normal distribution,approximately what percentage of scores falls between one standard deviation below the mean and one standard deviation above the mean?

A distribution of scores that is positively skewed will have a small number of scores that

After completing planned analyses,the researcher must interpret the results of statistical tests.Note several steps that are involved in such interpretation.

The Nature and Tools of Research

The Problem: the Heart of the Research Process

Review of the Related Literature

Planning Your Research Project

Writing the Research Proposal

Descriptive Research

Experimental, quasi-Experimental, and Ex Post Facto Designs

Qualitative Research Methods

Historical Research

Analyzing Qualitative Data

Mixed-Methods Designs

Planning and Preparing a Final Research Report

Filters

Exam 8: Analyzing Quantitative Data

When reporting growth data,the most useful measure of central tendency is the:

Note several steps researchers can take to optimize the power of their statistical tests.

Danzell is a purchasing agent for a major grocery store chain.He has noticed over the years that the higher the outdoor temperature,the more likely people are to buy fresh fruit.Based on Danzell's observations,we would say the correlation between outdoor temperature and buying of fresh fruit is:

When conducting a meta-analysis,a researcher will typically:

In a normal distribution,approximately what percentage of scores falls between one standard deviation below the mean and one standard deviation above the mean?

A distribution of scores that is positively skewed will have a small number of scores that

After completing planned analyses,the researcher must interpret the results of statistical tests.Note several steps that are involved in such interpretation.

The Nature and Tools of Research

The Problem: the Heart of the Research Process

Review of the Related Literature

Planning Your Research Project

Writing the Research Proposal

Descriptive Research

Experimental, quasi-Experimental, and Ex Post Facto Designs

Qualitative Research Methods

Historical Research

Analyzing Qualitative Data

Mixed-Methods Designs

Planning and Preparing a Final Research Report

Filters