Public Speaking Week 3

What is the mean of the group of numbers: 3, 5, 8, 10, 12, 12, 27?

11

What are two things you should do to make sure your statistics are representative?

Different groups of a population sample must be in correct proportion. The sample size must be large enough.

True or false: It is generally better to use statistics from a company or an organization that has a vested interest in the figures.

False

Which two statements about using concrete examples in a speech are true?

They have a strong impact on listeners' beliefs and actions. They can make ideas more personal.

In statistics, what is the mean?

average value of a group of numbers

Because numbers can be interpreted in many ways, what should a speaker avoid when including numbers in a speech?

biased

What are the three basic kinds of examples used as support for a speech?

brief examples extended examples hypothetical examples

Darrell Huff, author of How to Lie with Statistics, attempted to question the long-held belief that numbers:

do not lie

Certain types of examples can personalize your ideas by adding

human

According to 19th-century physicist Lord Kelvin, when a person can measure and express what they are speaking about in Blank______, they have proved that they know something about the topic.

numbers

When an example gives a human face or perspective to an abstract idea, it is said to

personalize

"About 1.4 million shelter dogs are adopted each year" is an example of a or an:

statistic

When using statistics in a speech, a speaker should ensure which of the following?

that the statistics are representative of what they claim to measure

When citing sources in your speech, you do not need to include all of the information that you would use in a written bibliography. What you include depends on which factors?

the claim you are making the kind of supporting material you are using your audience your topic

Although you do not need to recite all of the information in your Works Cited list about your source, which of the following should you typically include in your oral citations?

the type of document, the author, the date published, and the author's qualifications

When using costs or other monetary measures from different years as a statistic in a speech, it is important to consider the ________ of the dollar in terms of inflation.

value