Pre- Assessment

In a dot plot showing the number of pets owned by students, there are 3 dots above the number 2. If each dot represents 2 students, how many students own 2 pets?

• 3

• 6

• 4

• 8

Answer explanation

If each dot represents 2 students and there are 3 dots then you can multiply to find that 6 students are being represented.

Look at the dot plot. How many students were surveyed to create this dot plot?

• 20

• 10

• 16

• 4

Answer explanation

All of the dots represent 1 student each, there are 16 dots therefore 16 students that were surveyed.

Based on the data plot, how many times does the number 6 appear in the data set?

• 9

• 6

• 1

• 4

Answer explanation

There are 4 dots above the 6 therefore, it is represented 4 times in the data set.

Look at the dot plot. Which number has the lowest frequency in data set B?

• 1

• 2

• 3

• 4

• 5

Answer explanation

No dots means the lowest frequency!

Look at the dot plot. Which dot plot shows the most people surveyed?

• Data set A

• Data set B

Answer explanation

Data set A has 11 dots or 11 people were surveyed. Data set B has 16 dots or 16 people surveyed.