Scatterplots, Median, Mode

A graph that shows the relationship between two sets of data graphed as ordered pairs.

• Dot Plot

• Scatter Plot

• Line Graph

• Correlation

Which describes the scatterplot?

• As speed increases distance decreases.

• As speed increases, distance increases.

• As speed decreases distance increases.

Which is the correct way to draw a trend line on a scatterplot?

• Following the trend, by connecting the points given.

• Following the trend, with the same number of points above as below.

• Just above the given data.

• Just below the given data.

Which could be two points on the trend line? 

• (0, 40) and (5, 80)

• (1,40) and (6, 80)

• (0, 0) and (5, 100)

• (0, 0) and (5, 80)

Find the median of the data set: 5, 7, 12, 15, 21.

• 7

• 12

• 15

• 14

Find the median of this data set: 3, 9, 14, 17, 24, 29.

• 14

• 15.5

• 17

• 24

In a scatter plot that shows the relationship between the amount of fertilizer used and the height of plants, what would a cluster of points at the higher end of both axes most likely indicate?

• More fertilizer leads to shorter plants.

• More fertilizer has no effect on plant height.

• More fertilizer leads to taller plants.

• The amount of fertilizer used is too high.

When creating a scatter plot, what does each point represent?

• A pair of values on a line

• A pair of values, one on the x-axis and one on the y-axis

• The mean of the data set

• The median of the data set

How do you determine the median in a data set with an even number of observations?

• By finding the value exactly in the middle of the set

• By averaging the two middlemost numbers

• By selecting the largest number

• By selecting the smallest number

If the median of a data set is 25, which of the following must be true?

• 25 is the smallest number in the set.

• 25 is the largest number in the set.

• Half of the numbers in the set are less than or equal to 25.

• All of the numbers in the set are equal to 25.