Intro to Statistics Review

A science of collection, presentation of data.

• Population

• Statistics

• Analysis of Data

• None of the above

Statistics which is concerned with summarizing values to describe group characteristics of the data.

• Descriptive

• Inferential

• Parametric

• Non Parametric

Each and every element of a large group of data.

• Population

• Sample

• Variable

• Data

You conduct a poll in which you randomly select 1000 registered voters from Texas and ask if they approve of the job their governor is doing. 48% of registered voters polled approved of the governor's job.

Identify the population.

• 1000 registered voters from Texas

• 48% of registered voters approve

• Registered voters from Texas

• Percent of registered voters that approve

Determine whether the given data is Qualitative or Quantitative.

Data: Glass size for Milk tea

• Qualitative Data

• Quantitative Data

A small representative of a population

• variable

• measurement

• sample

• summation

Determine whether the given data is Qualitative or Quantitative.

Data: Monthly salary 

• Qualitative Data

• Quantitative Data

To determine the average length of trout in a lake, researchers catch 20 trout and measure them. The average length of the trout was 14.7 inches.

State the sample statistic.

• 20 fish

• trout in a lake

• Average length of trout in the lake

• Average length of trout in the lake is 14.7 inches

You asked a class of third graders if they like vanilla ice cream, and 90% of the class raise their hands. Why is this an example of a parameter?

• because the data came from the entire population of the class

• because 90% of an entire class is too large to be just a statistic

• because data taken from a class of students is always categorized as a parameter

• because there are many third graders

Is $68,000 a parameter or a statistic?

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

• parameter

• statistic