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- Keenya, Maya, Jessie, Ana, and Shannon all walk to school together.
- Jessie lives 7 blocks from school.
- Shannon lives 2 blocks from school.
- Maya lives 4 blocks from school.
- Keenya lives 1 block from school.
- Ana lives 3 blocks from school.
- Jacob's group stood in line in order of height and wrote their heights in this table.
- Is there one student in the middle of the line?
- How is Jacob's group different from Jerome's group in Question 1?
- Which student or students are in the middle of the line?
- Which number or numbers are in the middle?
- Draw the number line below. Show the heights of the students by marking them on the number line. What number is between the two middle numbers? (Hint: Find the number halfway between the two middle values.)
What is the median number of blocks that Keenya's group lives from
school?
The Middle of the Middle
When there is an even number of values, there are two numbers that are in the middle. Then the median is the number that is midway between the two middle numbers. In Jacob's group, the median height is 54 inches, even though none of the students are 54 inches tall. 54 inches is exactly midway between the two middle values, 53 inches and 55 inches.
- Shannon and her friends were talking about their cousins.
- Shannon has 5 cousins.
- Romesh has 14 cousins.
- Roberto has 9 cousins.
- Irma has 4 cousins.
- Nicholas has 18 cousins.
- Nila has no cousins.
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Roberto said, “The median number of cousins we have is 7 cousins.” Shannon said, “That can't be right because none of us have 7 cousins.” Use this number line to decide who is correct. Explain your thinking.
