Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
|
Data |
Is the plural of the latin datum (given fact) |
|
|
Observation |
Is a single member of a collection of items that we want to study such as a person, firm, or region |
|
|
Variable |
Is a characteristic of the subject or individual such as an employees income or an invoice amount |
|
|
Data set |
Consists of all the values of all the variables for all of the observations we have chosen to observe |
|
|
Univariate data sets |
One variable |
|
|
Bivariate data sets |
Two variables |
|
|
Multivariate data sets |
More than two variables |
|
|
What are the two types of data? |
Categorical data and numerical data |
|
|
Categorical data (qualitative data) |
Have values that are described by words rather than numbers |
|
|
Coding |
This is when the values of the categorical variable might be represented using numbers |
|
|
Binary variables |
When some categorical variables have only two values |
|
|
Numerical data |
This kind of data arises from counting, measuring something, or some kind of mathematical operation. |
|
|
Discrete |
A variable with a countable number of distinct values |
|
|
Continuous |
A numerical variable that can have any value within an interval |
|
|
Time series data |
If each observation in the sample represents a different equally spaced point in time, we have this. |
|
|
Cross-sectional data |
If each observation represents a different individual unit at the same point in time we have this |
