In many studies more than one variable is recorded per case or individual.

The entire purpose of the study is to determine how, if at all, the procedure affects survival time. A bag of broccoli crowns weighs four pounds. As you meld your love for the written word with science, you'll notice the world come to life in a most unique way. An automobile manufacturer wants to know how bright brake lights should be in order to minimize the time required for the driver of a following car to realize that the car in front is stopping and to hit the brakes.

Variable Types

Summarizing Data Graphically and Numerically. They treat them as if they were categorical variables.

Kinds of data

In this study, researchers wanted to identify variables connected to low birth weights. Here are some examples of Quantitative variables.

The number of letters in the alphabet is 26 and five of them are vowels. Age, for example, is a ratio scale and it makes sense to say that a 1000 year old antique is ten times older than a 100 year old one. Licenses and Attributions. For example, we can count the number of sheep on a farm or measure the gallons of milk produced by a cow.

Here are some example of quantitative data: Data consist of individuals and variables that give us information about those individuals. A jug of milk holds one gallon.

Examples of Quantitative Data

An important distinction between variables is between qualitative variables and quantitative variables. Type of surgery is an explanatory variable. Age Years, months, decades, minutes Weight Pounds, tons, ounces, grams Area Acres, square miles, square feet Speed Miles per hour, light years, feet per second.

The experiment seeks to determine the effect of the independent variable on relief from depression. The study was conducted with 39,000 women aged 45 and up.