Types of Graphs
This type of graph is best used to compare different categories of data.
Circle Graph or Bar Graph
A line on a graph that goes upwards from left to right shows this type of trend.
Positive
The vertical axis on a graph is also known as this.
y- axis
What does the x-axis of a graph typically represent?
Independent variable
This graph uses bars of different heights to represent the frequency of data.
Bar Graph
Describe the trend shown in a graph where the data points are scattered with no clear pattern.
No Correlation
The title of a graph should clearly state this.
What the graph is about (or the topic of the data)
If a bar graph shows that the tallest bar is for "Pizza," what can you infer?
That pizza is the most popular choice
This graph displays data as points connected by lines, often showing change over time.
Line Graph
A line on a graph that goes downwards from left to right shows this type of trend.
Negative
The individual pieces of information plotted on a scatter plot graph are called this.
Data points
If a line graph shows a sharp increase in sales in December, what might you conclude?
That there might have been a holiday sale or special promotion in December.
This graph would be used to show the relationship between the number of hours studied and test scores.
Scatter Plot Graph
What is the value of y= 3x - 4 when x =4?
y= 3 (4)- 4
y= 8
Explain what a "positive correlation" means in the context of a scatter plot.
The scale on a graph refers to the numerical values used on the y- axis, and it should be ____________.
Consistent (increases by same number every time)
If a scatter plot shows a tight cluster of points going from the bottom left to the top right, what can you infer about the relationship between the two variables?
That there is a strong positive correlation between the two variables.
This type of graph is circular and divided into sectors, showing the proportion of different categories to a whole.
Circle Graph
Write an equation in point slope form for the line that passes through 0,3 (y) and has a slope of -2 (x).
What is y = -2x + 3?
Explain what a "negative correlation" means in the context of a scatter plot.
Explain the difference between discrete and continuous data and how they are typically represented on graphs
Discrete data is separate and distinct (e.g., number of students), often shown with bar graphs. Continuous data can take any value within a range (e.g., height), often shown with line graphs or scatter plots.
Describe what the slope of a line on a distance-time graph represents.
What is the speed (or rate of change of distance)