Finding and Using Mean and Median

Finding and Using Mean and Median

Fill in the Blanks

Two groups of 20 seedlings were used in a science experiment. One group was placed in the sun. The other was placed in the shade. The heights of both groups of seedlings (in centimeters) at the end of the experiment are shown in tables. Find the median height of the seedlings in the sun.

Fill in the Blanks

Two groups of 20 seedlings were used in a science experiment. One group was placed in the sun. The other was placed in the shade. The heights of both groups of seedlings (in centimeters) at the end of the experiment are shown in tables. Find the median height of the seedlings in the shade.

Multiple Choice

Two groups of 20 seedlings were used in a science experiment. One group was placed in the sun. The other was placed in the shade. The heights of both groups of seedlings (in centimeters) at the end of the experiment are shown in histograms. Find the median height of the seedlings in the sun.

• 3.0 to 3.5 cm

• 2.75 cm

• 3.0 cm

• 3.25 cm

Multiple Choice

Two groups of 20 seedlings were used in a science experiment. One group was placed in the sun. The other was placed in the shade. The heights of both groups of seedlings (in centimeters) at the end of the experiment are shown in histograms. Find the median height of the seedlings in the shade.

• 3.0 to 3.5 cm

• 2.5 to 3.0 cm

• 3.0 cm

• 3.25 cm

Open Ended

How does the way the data is presented (in a table, in a chart with intervals like with the pie chart in the video or with the histograms) affect the conclusion you can draw about a median?

Fill in the Blanks

The pie chart shows how the number of children in a playgroup can be classified by age. Find the mean age of the children in the playgroup.

Fill in the Blanks

The pie chart shows how the number of children in a playgroup can be classified by age. Find the median age of the children in the playgroup.

Multiple Choice

Zack and Yvonne both attend the same private school. The table lists the distance (in miles) from the school they are attending to the homes of all 150 students in the school. Zack and Yvonne are to find the mean home-to-school distance.

Zak asks 10 students in his class for their home-to-school distances, then finds the mean. What type of sample does Zack use?

• convenient sample

• random sample

Open Ended

Zack and Yvonne both attend the same private school. The table lists the distance (in miles) from the school they are attending to the homes of all 150 students in the school. Zack and Yvonne are to find the mean home-to-school distance.

Yvonne selects a random sample of 10 students. Suggest how she can select her random sample.

Open Ended

Zack and Yvonne both attend the same private school. The table lists the distance (in miles) from the school they are attending to the homes of all 150 students in the school. Zack and Yvonne are to find the mean home-to-school distance.

Select a random sample of 20 students and find the mean.

**Don't forget to list the 20 distance that are your sample.**