Standard Deviation

Which of the following is a measure of variability?

• mean
• median
• mode
• standard deviation

Tags

CCSS.6.SP.A.3

Ervin bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the standard deviation of Ervin's scores?

• 511.33

• 22.61

• 438.48

• 20.94

Which is NOT true about the normal distribution curve?

• It is bell-shaped.

• The mean, median, and mode are approximately equal

• The smaller the standard deviation, the less spread in the curve.

• It is asymmetrical.

What is the Normal Range (68%) of the annual precipitation for Phoenix, if the average is 29 with a standard deviation of 3?

• 26-32
• 3-29
• 26-29
• 39-32

Tags

CCSS.HSS.ID.A.4

mean = median

• skewed left

• skewed right

• symmetrical

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

Shape?

• Skewed right
• Skewed left
• Symmetric
• Unimodal

What is the shape of this bar graph?

• Skew right

• Skew left

• Symmetrical

• uniform

The shape of the data is skewed left.

• TRUE
• FALSE

The shape of the data is skewed left.

• TRUE
• FALSE

What is the box plot?

• skewed left

• skewed right

• symmetrical

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1