Stats Unit 7.1 - 7.4

What is a smaller, representative group drawn from a population?

• unit

• sample

• parameter

• statistic

This occurs when a sample is collected in such a way that some members of the intended population are less likely to be included than others.

• sampling error

• sampling bias

• random sampling

• clustered sampling

What is a characteristic of a population?

• unit

• sample

• parameter

• statistic

What is the term in statistics for the entire collection or group of individuals being studied?

• population

• sample

• parameter

• statistic

What is a characteristic of a sample?

• parameter

• statistic

• categorical variable

• numerical variable

Identify the population:

A survey of 500 adults in the U.S. found that 54% drink coffee daily.

• A. Collection of the 500 adults surveyed

• B. Collection of all adults in the U.S.

• C. 54%

• D. 500

Identify the sample:

A survey of 500 adults in the U.S. found that 54% drink coffee daily.

• A. Collection of the 500 adults surveyed

• B. Collection of all adults in the U.S.

• C. 54%

• D. 500

True or false:

In the statement “A survey of 500 adults in the U.S. found that 54% drink coffee daily” 54% is a parameter.

• A. TRUE

• B. FALSE

How can mathematicians determine the distribution of data?

• They look for the most popular answer

• They find the mean by adding all the numbers and dividing by the total

• They look for the middle number in the data

• They look at how the data is spread out when it is organized on a graph

A study on the impact of motivation on the performance of UiTM Sarawak students will be done by a team of researchers. 150 students of UiTM Sarawak will be chosen as respondents of this study.

What is the sample?

• All students of UiTM Sarawak

• 150 students of UiTM Sarawak

• A list of all UiTM Sarawak students

• A team of researchers