Lesson T6.1.3
T6.1.3 Scatter graphs Quiz: KS3 Maths, Unit 6
20 questions
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Lesson T6.1.3, Scatter graphs: 20 multiple choice questions for the KS3 Maths (National Curriculum), Unit 6: Statistics, written with Revision Ninja.
Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.
The 20 questions
-
What does a scatter graph show?
- Time series
- Categorical totals
- Two variables
- One variable
-
What does positive correlation show on a scatter graph?
- No relationship exists
- Variables increase together
- One variable stays constant
- Variables decrease together
-
Which pair of variables shows negative correlation?
- Battery and time
- Revision time and marks
- Height and weight
- Age and shoe size
-
What does no correlation mean on a scatter graph?
- No clear pattern
- Curved pattern
- Strong downward trend
- Strong upward trend
-
What is the purpose of a line of best fit?
- Join every point
- Calculate the mean
- Show data trend
- Find exact values
-
Points lie roughly on a straight line that slopes up. What is the correlation?
- Strong positive
- No correlation
- Zero correlation
- Strong negative
-
What term describes a data point far from the general pattern?
- Median
- Average
- Outlier
- Maximum
-
A line of best fit has the equation y = 2x + 1. What is y when x = 5?
- 9
- 11
- 5
- 10
-
Predicting a value inside the range of the data is called what?
- An outlier
- Interpolation
- Correlation
- Extrapolation
-
Correlation does not prove what?
- A relationship
- A pattern
- A trend
- Causation
-
How many variables are recorded for each item in bivariate data?
- Four variables
- One variable
- Two variables
- Three variables
-
What does a scatter graph with an upward sloping trend indicate?
- Negative correlation
- Constant correlation
- Positive correlation
- No correlation
-
Points lie close to the line y = -3x + 20. What is the correlation?
- No correlation
- Strong negative
- Strong positive
- Weak positive
-
A line of best fit passes through (2, 10) and (6, 18). What is its gradient?
- 4
- 2
- 8
- 0.5
-
What does the overall pattern on a scatter graph represent?
- Trend
- Outlier
- Average
- Range
-
A scatter graph shows the number of pets against the number of siblings, with points spread randomly. What is the correlation?
- Perfect positive
- No correlation
- Strong negative
- Strong positive
-
Temperature is on the x-axis and cups of hot chocolate sold is on the y-axis. As temperature rises, the points fall. What is the correlation?
- Perfect
- Positive
- Negative
- No correlation
-
A point is far from the line of best fit. What is this called?
- A median
- A range
- An outlier
- A mode
-
Which axis on a scatter graph usually shows the independent variable?
- x-axis
- y-axis
- Vertical axis
- Diagonal axis
-
Points lie along y = x + 2. What is y when x = 7?
- 7
- 14
- 9
- 5
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