Scatter graphs

• Maths
• Secondary Education
• Age 13

What is the range of a function?

1. Set of x-values
2. Set of y-values
3. All possible output values
4. All input values

Which of the following is a linear function?

1. y = 2x + 3
2. y = -x + 1
3. y = x²
4. y = sin(x)

What does the domain of a function represent?

1. All possible input values
2. Set of x-values
3. Set of y-values
4. All output values

Which notation represents a function?

1. x + y
2. x² - 5
3. g(x)
4. f(x)

What is a function in mathematics?

1. A method to solve equations
2. A relation that assigns one output
3. A set of ordered pairs
4. A random collection of numbers

What can outliers indicate in a scatter graph?

1. Average values
2. Normal distribution
3. Unusual data points affecting trends
4. Consistent patterns

What does a scatter graph lack?

1. A connecting line between points
2. Data points
3. Axes
4. Legends

What indicates a strong correlation in a scatter graph?

1. Points forming a circle
2. Randomly scattered points
3. Only a few points present
4. Points closely aligned in a line

Which axis typically represents the independent variable?

1. None of the axes
2. Vertical axis (y-axis)
3. Horizontal axis (x-axis)
4. Both axes

What does a scatter graph represent?

1. Relationship between two variables
2. Only one variable trend
3. Time series data
4. Single data point distribution

How can you identify a positive correlation?

1. Points fall from left to right
2. Points rise from left to right
3. Vertical line of points
4. Random distribution

What do clusters in scatter graphs indicate?

1. No correlation
2. Groupings of data points
3. Data outliers only
4. Linear trends

What is plotted on the x-axis?

1. Frequency
2. Average values
3. Dependent variable
4. Independent variable

What do scatter graphs display?

1. Relationship between two variables
2. Categorical data comparisons
3. Trends over time
4. Only one variable's changes

How can you identify a correlation?

1. By the colour of points
2. By the pattern of points
3. By the size of the graph
4. By the gridlines used

What do points on a scatter graph represent?

1. Data pairs for two variables
2. Trends over time
3. Single data values
4. Overall averages

How do you interpret a positive correlation?

1. No relationship exists
2. Both variables increase together
3. Variables are unrelated
4. One variable decreases with the other

What does a scattergraph with no pattern indicate?

1. Strong positive correlation
2. Strong negative correlation
3. No correlation between variables
4. Both variables are equal

What does a line of best fit do?

1. Connects all points exactly
2. Shows overall trend in data
3. Represents only outliers
4. Indicates no correlation