Use the data in the table to answer the question.
| Number of Siblings | Tally |
|---|---|
| 0 | III |
| 1 | \#\#II |
| 2 | III |
| 3 | IIII |
| 4 | I |
| 5 | II |
Which number line would be needed to create a dot plot for the data on the number of siblings?
A. a number line from 0 to 5
B. a number line from 4 to 5
C. a number line from 0 to 7
D. a number line from 1 to 7
Answer (1)
The number line for a dot plot must cover the range of the data.
The minimum number of siblings is 0, and the maximum is 5.
Therefore, the number line must range from 0 to 5.
The required number line is from 0 to 5. an u mb er l in e f ro m 0 t o 5
Explanation
Analyze the data The table provides data about the number of siblings people have. The 'Number of Siblings' column lists the possible number of siblings, and the 'Tally' column shows how many people have that many siblings. To create a dot plot, we need a number line that covers the range of the number of siblings in the data.
Determine the range of the number line The smallest number of siblings in the table is 0, and the largest number of siblings is 5. Therefore, the number line must include all the numbers from 0 to 5.
Select the correct number line The number line needed should start at 0 and end at 5. This includes all the possible values in our data set.
State the final answer The correct answer is a number line from 0 to 5.
Examples
Dot plots are useful for visualizing the distribution of data. For example, if you wanted to see how many students in your class have a certain number of pets, you could create a dot plot. The number line would represent the number of pets, and each dot would represent a student. This allows you to quickly see the most common number of pets among your classmates.
