cat/quan, ind/var, obs/exp, sampling

What are characteristics that are defined by a number, such as age or weight?

• descriptive statistics

• inferential statistics

• categorical variables

• numerical variables

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

• unit

• sample

• parameter

• statistic

What are characteristics that cannot be defined by a number, such as shape or color?

• descriptive statistics

• inferential statistics

• categorical variables

• numerical variables

A variable (or response variable) is

• a characteristic of interest about each individual element of a population or sample

• a characteristic that is irrelevant to the collection of the data

• a characteristic that changes when the data is collected

• a characteristic or trait that will be ignored in a sample population

A variable that takes on values which can be divided into groups or categories.

• Categorical Variable

• Residual

• Correlation Coefficient

• Statistic

Answer explanation

A categorical variable is a variable that takes on values which can be divided into groups or categories. For example, color is a categorical variable which can take on the values, red, blue, green, etc.

What type of data consists of numerical values and can be measured on a scale?

• a) Quantitative data

• b) Categorical data

• c) Sample data

• d) Population data

Which of the following is an example of categorical data?

• a) Temperature in degrees Celsius

• b) Number of books in a library

• c) Colors of cars in a parking lot

• d) Annual income of individuals

At the beginning of the school year, a high-school teacher asks every student in her classes to fill out a survey that asks the number of years they have lived at their current address, their favorite school subject, and whether they plan to go to college after high school.  Which of the following best describes the types of variables that are being measured? 

• three quantitative variables.

• two categorical variables and one quantitative variable.

• one categorical variable and two quantitative variables.

• three categorical variables

What type of Data are we collecting when asking: "How many pets do you have?"

• Categorical Data

• Quantitative Data

What type of Data are we collecting when asking: "What kind on pet do you have?"

• Categorical Data

• Quantitative Data