Quantitative variables are numerical variables: counts, percents, or numbers. There are a variety of ways that quantitative data arises in statistics. Some examples of quantitative variables are shown below. Data refers to a set of values, which are usually organized by variables (what is being measured) and observational units (members of the sample/population). Learn. Distribution of One Quantitative Variable Graphs Numerical Measures CO-4: Distinguish among different measurement scales, choose the appropriate descriptive and inferential statistical methods based on these distinctions, and interpret the results. Qualitative Versus Quantitative. When working with statistics, it’s important to understand some of the terminology used, including quantitative and categorical variables and how they differ. 0. Unit: Summarizing quantitative data. Identifying individuals, variables and categorical variables in a data set Practice: Individuals, variables, and categorical & quantitative data This is the currently selected item. Legend (Opens a modal) Possible mastery points. We consider just two main types of variables in this course. Two types of variables are used in statistics: Quantitative (also called measurement variable or numerical variables) and categorical (also called qualitative):. Skill Summary Legend (Opens a modal) Measuring center in quantitative data. Some common variables used in statistics are explained here. It also makes sense to think about it in numerical form; that is, a person can be 18 years old or 80 years old. Simple linear regression uses one quantitative variable to predict a second quantitative variable. Their values may occur more than once for a set of data. An example of data is a data matrix in a spreadsheet program, such as Excel or SPSS. Quantitative Variables - Variables whose values result from counting or measuring something. Variables can either be quantitative or qualitative. A scatterplot is a graph used to display data concerning two quantitative variables. Quantitative data is the type of data whose value is measured in the form of numbers or counts, with a unique numerical value associated with each data set. The trick is to get a handle on the lingo right from the get-go, so when it comes time to work the problems, you’ll pick up on cues from the wording and get going in the right direction. In our medical example, age is an example of a quantitative variable because it can take on multiple numerical values. In statistics, quantitative data is numerical and acquired through counting or measuring and contrasted with qualitative data sets, which describe attributes of objects but do not contain numbers. Quantitative variables. Weight and height are also examples of quantitative variables. Video: One […] Statistics intro: Mean, median, & mode (Opens a modal) Mean, median, & mode example (Opens a modal) Calculating the mean Correlation is a measure of the direction and strength of the relationship between two quantitative variables. A variable is a characteristic of an object. Any variables that can be expressed numerically are called quantitative variables. ; Categorical variables are descriptions of groups or things, like “breeds of dog” or “voting preference”. Each of the following is an example of quantitative data: Also known as numerical data , quantitative data further describes numeric variables (e.g.