Data Statistic Review

What is the standard deviation for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2

• 6.89

• 10.1

• 7.26

• 9

__________ is the science of collecting, organizing, analyzing, and interpreting data in order to make decisions.

• Statistics

• Data

• Population

• Sample

Determine whether the numerical value is a parameter or statistic:

A survey of 2514 college board members found that 38% think that higher education costs what it should relative to its value.

• Parameter

• Statistic

A poll was conducted in which 1000 adults were asked if they prefer bottled water or tap water, and 57% of them said they prefer bottled water. In this scenario, the 57% is a _____.

• population

• sample

• parameter

• statistic

There are 17,246,372 high school students in the U.S. In a study of 8505 U.S. high school students 16 years of age or older, 44.5% of them said they texted while driving at least once in the past 30 days. Which of the following represents the sample?

• the 17,246,372 high school students in the U.S.

• the 8505 U.S. high school students 16 years of age or older

• the 44.5% who said they texted while driving

• the past 30 days

Is the following a parameter or a statistic?

The average annual salary for 35 of a company's 1200 accountants is $68,000.

• parameter

• statistic

Is the information collected during the survey numerical or categorical data?

• Numerical data. I know this because the y-axis is labeled with numbers. 

• Numerical data. I know this because the surveyor counted how many people that they surveyed. 

• Categorical data. I know this because the responses to the survey are names. 

• Categorical data. I know this because each column is a different color. 

What is the sample in this statistic? According to a study of 1,234 High School students, students perform 1.5 grade levels better on standardized tests when their GPAs are 3.5 or higher.

• 1,234 high school students in the study

• high school students with a 3.5 GPA

What is the sample in this statistic? 4 out of 5 dentists prefer Crest.

• The 4 dentists who prefer Crest

• All the dentists who answered the survey

Statistics that describe the group characteristics.

• Descriptive Statistics

• Inferential Statistics