Intro to Statistics Problems

The average age of the students in a statistics class is 22 years. Does this statement describe descriptive or inferential statistics?

• Inferential statistics       

• Descriptive statistics

The process of using information from a sample to make generalizations about the larger population is called statistical inference.

•  True

• False

Which two are examples of descriptive statistics?

• 1. Mean and standard deviation.

• 1. Median and correlation.

• 1. Variance and regression analysis.

• 1. Hypothesis testing and histograms.

From past figures, it is predicted that 30% of the registered voters will vote in the March primary. Does this statement describe descriptive or inferential statistics?

• Descriptive statistics      

• Inferential statistics

Prather and Albert are running for teacher of the year there is a three point MOE. Predictions are Prather has 52% of the vote and Albert 48%. Considering the MOE Prathers range is

• 52<x<55

• 48<x<55

• 49<x<55

• 52%

Prather and Albert are running for teacher of the year there is a three point MOE. Predictions are Prather has 52% of the vote and Albert 48%. Considering the MOE Alberts range is

• 48%

• 45<x<51

• 48<x<55

• 42<x<66

I have 100 apples in bag with a margin of error of 2%

What is my range

• 100 to 104

• 98 to 100

• 96 to 104

• 98 to 102

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. 

The statistic is a number describing the:

• population

• sample

• survey

• percent

Which of the following is an example of quantitative data?

• The color of your car

• A person's state of residence

• A person's Zip Code

• A Person's Height