Individuals and Variables of Data

Identify the variables of the data set. Decide if they are categorical or quantitative. A teacher performs a study on 13 high school seniors. She gathers data on their GPA, IQ, and BMI.

• 13 high school seniors.

  Categorical.

• 13 high school seniors.

  Quantitative

• GPA, IQ, and BMI.

  Categorical.

• GPA, IQ, BMI.

  Quantitative

Identify the individuals of the data set. A teacher performs a study on 13 high school seniors. She gathers data on their GPA, IQ, and BMI.

• All high school seniors in a specific school.

• 13 high school seniors.

• GPA, IQ, and BMI.

• GPA, IQ, BMI.

What is the word in statistics for any characteristic or attribute of a person, place, or thing?

• variable

• descriptive statistic

• inferential statistic

• parameter

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 quantitative variable that could have an infinite number of values?

• categorical variable

• qualitative variable

• discrete variable

• continuous variable

What is a quantitative variable that can take on a certain number of values?

• categorical variable

• qualitative variable

• discrete variable

• numerical variable

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 school surveys students to find out their favorite food. The students would be identified as

• individuals

• variables

According to the Internet Movie Database, Avatar is tops based on box-office receipts worldwide. The table displays data on several popular movies. Identify the variables in this data set.

• Movie titles, year, ratings, time, and genre

• Year, ratings, time, genre, and box office earnings

• Movie titles, ratings, and genre

• Year, time, and box office earnings.

What type of graph is shown here?

• Dotplot

• Histogram

• Boxplot

• Pie Chart