Data that can only be numerical. Includes discrete and continuous numerical data.
Quantitative Data
A type of graph that you might use to visually show different parts of a whole.
Pie Chart / Circle Graph
The following is an example of it:

No Correlation
Data which is not directly collected by a researcher. For example, a grade 8 student using data from a government website for a statistics project.
Secondary Data
The equation for finding the area of a triangle.
A = (B*H)/2
Numerical data which can be measured but not counted.
Here is an example of it:
Histogram
An example is shown here:
Positive Correlation/Relationship
An inexpensive data collection method which allows researches to get quick, simple responses from participants.
Surveys/Polls
The equation for calculating simple interest.
P * r * t
The number of times that something happens.
Frequency
Type of graph you might use to show the relationship between 2 variables
Scatter Plot
An example is shown here:

Negative Correlation/Relationship
Conducting 1-on-1 conversations to gain detailed qualitative data.
Interviews
An integer which is neither positive nor negative
zero
The factor in two-variable data that effects the other variable being studied.
independent variable
A type of graph that you might use to show the temperature every hour over a 24 hour period.
Line graph / Broken line graph
The correlation that you would expect to find when studying the relationship between temperature and ice cream sales.
Positive Correlation
A type of survey which is administered to 100% of the population.
Census
The equation for the volume of a cylinder.

a mutual relationship or connection between two or more things.
correlation
Here is an example of it:

Stacked Bar Graph
The correlation you would expect to find when examining the relationship between sun exposure and happiness
Positive Correlation
Focus Group.
A number which cannot be expressed as a fraction
Irrational number