Statistics Quiz # 8

A measure of how much reduction in risk has occurred between two groups treated differently when compared with the untreated group’s percentage on the outcome of interest is known as_____

Absolute Risk Reduction

Relative Risk Reduction

Partial Risk Reduction

None of these

A characteristic of a good test where it is likely to indicate the presence of a disease when the patient really does not have the disease.

True

False

A characteristic of a good test where it is likely to be_____ when it does not indicate the presence of a disease.

Correct

Incorrect

Neutral

Both a and b

Structural Equation Modeling can be used to test how well alternative theoretical models best fit a set of data.

True

False

The condition where a test does not indicate the presence of a disease and the patient really does not have the disease is known as true negative.

True

False

The condition where a test indicates the presence of a disease and the patient really does have the disease is known as_____

True positive

False positive

True negative

False negative

Uninterpretable is a condition when a test’s outcome is invalid because_____

Test has not been conducted according to correct instructions

Test has not been conducted at all

Test has not been conducted timely

All of these

Variety is an essential characteristic of big data that refers to the_____

Nature of actual data

Source of actual data

Reliability of actual data

Both a and b

Velocity is an essential characteristic of big data that refers to the impressive _____ at which it can be gathered.

Speed

Time

Amount

Both a and b

Veracity is an essential characteristic of big data that refers to the _____

Truth of the data

Falsity of the data

Subjectivity involved in its interpretability

All of these

_____ is an essential characteristic of big data that refers to the massive amount of data to analyze.

Variety

Veracity

Volume

Velocity

A relationship in which one factor can be said to be the cause of another is called as “chance is lumpy”

True

False

Although called different things, the same statistics are used in disciplines such as ______.

Agriculture

Politics

Astronomy

All of these

Researchers want the sample they use for inferential statistics to be ______ of the population.

Representative

An exact replication

Descriptive

A unique subset

Statistics describes a set of ______ that is used for describing, organizing, and interpreting information.

Statements

Rules and exceptions

Tools and techniques

Numbers and letters

According to the textbook, learning statistics is most closely compared to ______.

Learning a new language

Learning how to use the computer

Learning how to compute mathematical equations

Learning how to paint a picture

Which of the following would be used to describe the type of statistical methods used to organize and describe the characteristics of a collection of data?

Inferential statistics

Descriptive statistics

Sampling methods

Population methods

Statistics is a shortened version of ______.

Statistical data

Statistical procedure

Statistical math

Statistical proof

The type of descriptive statistic that tells you the most frequently occurring value is the ______.

Mean

Average

Mode

Sum total

Inferential statistics involve ______ the data.

Organizing

Balancing

Editing

Interpreting

What is a collection of information also called?

Data set

Sample statistic

Descriptive statistic

Population subset

In statistics, a sample is ______.

The entire group to a which a law of nature applies

A subset of a group to which a law of nature applies

All of the subjects in which we are interested

At least half of the subjects in the population

Who popularized the use of the correlation coefficient?

Charles Darwin

Neil Salkind

Francis Galton

R. A. Fisher

______ statistics involve collecting, organizing, and summarizing data.

Experimental

Descriptive

Inferential

Organizational

In statistics, a population is ______

The entire group

A subset of the group

All the people in the world

An infinite number that cannot be counted

The study of statistics will require you to ______.

Develop new formulas for statistical procedure

Learn how to compute and interpret statistical procedures correctly

Memorize many complicated and unfamiliar formulas

Learn a relatively unimportant step in research

Seven students reported the following individual earnings from their sale of books: $7, $13, $3, $5, $2, $9, and $3. In this distribution of earnings, the mean is ______.

7

3

5

6

The value that best represents an entire group of scores is the ______.

Mean

Median

Mode

Average

Imagine that 86,999 penniless people live in the town of Centerville. Bill Gates, whose net worth is $87,000,000,000 moves into Centerville. Now the mean net worth is ______ and the median net worth is ______.

0; 0

0; $1,000,000

$1,000,000; 0

$1,000,000; $1,000,000

This measure of central tendency can be considered the most precise:

Mode

Median

Mean

None of these