1.1 Introduction to the Practice of Statistics: Review

What kind of statistics describes data through numerical summaries, tables, and graphs?

• Qualitative statistics
• Descriptive statistics
• Inferential statistics
• Predictive statistics

What kind of statistics uses methods that take results from a sample, extends them to the population, and measures the reliability of the result?

• Predictive statistics
• Qualitative statistics
• Inferential statistics
• Descriptive statistics

A statistic is a numerical summary based on a ___?

• sample

• random guess
• population

A parameter is a numerical summary of a ___?

• sample
• dataset
• variable
• population

Qualitative variables allows for...?

• Quantitative analysis of numerical data.
• Measurement of data using statistical methods.
• Comparison of data based on numerical values.
• classification of individuals based on some attribute or characteristic.

Quantitative variables provide...?

• numerical measures of individuals. Arithmetic operations can be performed on these values and provide meaningful results.

• Information that is purely descriptive and lacks numerical value.
• Data that is only applicable to categorical variables.
• Qualitative data that is subjective and cannot be measured.

A discrete variable is...

• A variable that can take on a finite or countable number of values.
• A variable that can take on any value within a range.

A continuous variable is...

• A variable that can take any value within a range.
• A variable that can only take whole numbers.

What are the 4 levels of measurement?

• Primary, Secondary, Tertiary, Quaternary
• Qualitative, Quantitative, Descriptive, Predictive
• Static, Dynamic, Linear, Non-linear
• Nominal, Ordinal, Interval, Ratio