unit 7 lesson 4 math unit test scatterplots

Answer 1

1. What is a scatterplot?

a) A graph that shows the relationship between two sets of data
b) A table displaying numerical data
c) A bar graph showing frequency distribution
d) A line graph depicting trends over time

Answer: a) A graph that shows the relationship between two sets of data

2. In a scatterplot, what type of relationship is shown if the points slope upwards from left to right?

a) Positive correlation
b) Negative correlation
c) No correlation
d) Exponential growth

Answer: a) Positive correlation

3. When interpreting a scatterplot, what does the correlation coefficient represent?

a) The strength and direction of the relationship between the two sets of data
b) The average value of the data points
c) The distance between each data point and the line of best fit
d) The slope of the line connecting two data points

Answer: a) The strength and direction of the relationship between the two sets of data

4. Which of the following statements about scatterplots is true?

a) A scatterplot can only display two sets of data
b) A scatterplot is used to show the distribution of a single variable
c) A scatterplot can be used to identify trends and relationships between variables
d) A scatterplot is a type of pie chart

Answer: c) A scatterplot can be used to identify trends and relationships between variables

5. How can outliers affect a scatterplot?

a) They have no impact on the overall interpretation
b) They can skew the trend or relationship shown in the scatterplot
c) They always indicate a positive correlation
d) They can only be identified in a bar graph

Answer: b) They can skew the trend or relationship shown in the scatterplot.