Descriptive Statistics

What is the standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

• 6.89

• 10.1

• 7.26

• 9

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Find the median of these numbers:
4, 2, 7, 4, 3

• 2
• 5
• 7
• 4

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Find the mean of these numbers:
5,11,2,12,4,2

• 4.1
• 6
• 4.5
• 4

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

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

• 193
• 127
• 60
• 66

Tags

CCSS.6.NS.B.3

If there is an even number of data in the data set how do you find the median?

• order the list of data and find the middle value

• order the list of data add the 2 middle values and divide by 2

• find the middle number in the list of numbers

• add the 2 middle values in the list of numbers and divide by 2

When calculating the mean you

• add all the numbers together and divide by the number of items

• scream

• pick the middle number

• pick the one that happens the most

Gabriella’s quiz grades are shown below.
88, 92, 92, 96, 98
Gabriella scored a 20 on her sixth quiz. What effect does this score have?

• The low score causes the median to increase.
• The low score causes the median to decrease.
• The low score causes the mean to increase.
• The low score causes the mean to decrease.

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

The hourly salaries of the workers at a restaurant are shown below.
$7.75, $8.50, $7.25, $9.00, $30.00, $8.25, $7.75, $9.00
Which statement is true?

• The worker who earns $7.25 an hour causes the mean to be a better representation of the typical salary than the median.
• The worker who earns $7.25 an hour causes the median to be  a better representation of typical salary than the mean.
• The worker who earns $30.00 an hour causes the mean to be a better representation of the typical salary than the median.
• The worker who earns $30.00 an hour causes the median to be a better representation of the typical salary than the mean.

All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

• 1
• 2
• 3
• 4

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

What is the shape of the distribution?

• Skewed Left 
• Skewed Right
• Symmetric
• Bimodal

Tags

CCSS.6.SP.A.2

CCSS.6.SP.B.5