Skip to lesson

Choose “Save as PDF” in the print dialog to keep a copy.

Cogito

Grade 6 Math · Chapter 9 · Lesson 2

Practice Worksheet

Centre and Spread

One number for the middle, one for the scatter.

10 problems · about 18 minutes · 6.SP.A.2, 6.SP.A.3, 6.SP.B.5

NameDate

Figure — use these to answer the problems

Add an extreme value and watch how differently the middle and the spread react.
012345678910
Value
At 22
At 33
At 42
At 100
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

1 problem

  1. From “What Makes a Question Statistical”

    Is "How many siblings does each child in the club have?" statistical?

    • Yes.
    • No.

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. What is the mean of 6, 8, and 13?

    Answer

  2. Which is pulled further by one very large value?

    • The mean.
    • The median.

  3. Mean of 2, 4, and 9?

    Answer

  4. Median of 1, 5, and 100?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. Range of 12, 4, and 20?

    Answer

  2. Mean of 10, 10, 10, and 10?

    Answer

Stretch Yourself

Mixed problems. Work out what kind of question it is before you start.

3 problems

  1. The Mean

    What is the mean of 4, 6, 8, and 10?

    Answer

  2. The Median

    What is the median of 3, 7, 9, 12, and 15?

    Answer

  3. The Range

    What is the range of 5, 8, 2, and 11?

    Answer