Types of Data
This type of data is collected first‑hand by the person conducting the investigation.
What is primary data?
When creating a data table, these should describe what each column represents.
What are column labels?
This graph is best for showing the relationship between two numerical variables.
What is a scatter plot?
When one variable increases while the other decreases.
What is a negative correlation?
Using a trend line to estimate a value within the data range.
What is interpolation?
Height, temperature, and time are examples of this type of numerical data that can take any value.
What is continuous data?
The independent variable belongs on this axis.
What is the x‑axis?
A bar graph is most appropriate for this type of data.
What is qualitative/categorical data?
A scatter plot with no noticeable pattern shows this.
What is no correlation?
Using a trend line to estimate a value outside the data range.
What is extrapolation?
Data that describes qualities or categories, not numbers.
What is qualitative data?
A graph title should include these two things.
What are the variables being compared?
A scatter plot with points forming a clear line shows this kind of relationship.
What is a strong correlation?
A point that does not fit the pattern of the rest of the data.
What is an outlier?
The straight line drawn on a scatter plot to show the overall trend.
What is a line of best fit?
Data counted in whole numbers, such as number of pets.
What is discrete data?
The dependent variable belongs on this axis.
What is the y‑axis?
This graph shows parts of a whole but is not ideal for showing change over time.
What is a circle graph/pie graph?
Points that slope upward but are loosely clustered show this strength of trend.
What is a weak positive correlation?
To make predictions using a scatter plot, students must identify direction and this feature of the trend.
What is the strength?
This is an example of what type of data? The relationship between studying hours and test scores.
What is two‑variable data?
These must stay consistent to accurately represent numerical values on a graph.
What are scale intervals?
A graph showing change over time with connected points.
What is a line graph?
Points that closely follow a downward line show this type and strength of relationship.
What is a strong negative correlation?
When a graph shows no correlation, this is what you can predict about future outcomes.
What is nothing / no reliable prediction?