Data Management_1

Data Management_1

1. Raw Data: Unprocessed information.

2. Variable: A quantity that can have any set of values

3. Continuous Variable: Involving a variable or data that can have an infinite number of possible values in a given interval. A continuous function or distribution that can be graphed as a smooth curve.

4. Discrete Variable: A variable that can take on only certain values within a given range.

5. Frequency Tables: A Frequency Table is a table that lists items and uses tally marks to record and show the number of times they occur.

6. Frequency Diagram: A diagram such as a histogram or frequency polygon, that shows the frequencies with which different values of a variable occur

7. Histogram: A bar graph in which the areas of the bars are proportional to the frequencies for various values of the variable.

8. Bar graph: A chart or diagram that represents quantities with horizontal or vertical bars whose lengths are proportional to the quantities

9. Frequency Polygon: A plot of frequencies versus variables values with the resulting points joined by line segments.