Definition Test 26

What is the mean?

4, 5, 6, 7, 3, 4, 10, 1

• 7

• 4.5

• 5

• 8

Find the mode:

3.8, 4.2, 4.0, 4.2, 4.2

• 4.2

• 3.8

• 4.0

• 4

What is the median of this data set?
3 , 17 , 17 , 11 , 8 , 13 , 5 , 18

• 11
• 12
• 13
• 17

Tags

CCSS.7.EE.B.3

What is the interquartile range (IQR)?

• 4
• 64
• 60
• 8

What value is the lower quartile?

• 66
• 58
• 60
• 64

Tags

CCSS.3.MD.B.4

What is the median?

• 62
• 58
• 66
• 60

Describe the shape of the graph.

• Skewed right

• Skewed left

• Random

• Symmetrical

If 50 crabs were captured and marked and then released and then a few days later 25 were caught and of those 5 were marked. What would the estimate of the population be?

• 500

• 250

• 75

• 200

How do you calculate IQR?

• $Q_1-Q_3$

• $Q_3-Q_1$

• $Q_1-1.5\left(Q_3-Q_1\right)$

• $Q_3+1.5\left(Q_3-Q_1\right)$

Give one reason for doing a pilot survey