standard deviation

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.3

CCSS.6.SP.B.5

CCSS.6.SP.A.2

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.3

CCSS.6.SP.B.5

CCSS.6.SP.A.2

What does this symbol represent?

• Standard Deviation
• Variance
• Mean Absolute Deviation
• Sigma

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

What is the mean?

• # happening the most
• the number in the middle
• biggest-smallest
• the average

Tags

CCSS.8.EE.C.7B

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

What is the standard deviation for the data given:
{12, 13, 29, 18, 61, 35, 21}

• 293.67
• 15.87
• 17.14
• 41.98

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

CCSS.6.SP.A.2

What is the Normal Range 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.6.SP.A.3

CCSS.6.SP.B.5

CCSS.6.SP.A.2

The data sets show the test scores of a group for the last two tests.
Test 1:  {75, 75, 85, 80, 65, 70, 65}  Test 2:  {95, 85, 85, 90, 90, 95, 100}
Which data set had the smaller standard deviation?

• Test 1 with a standard deviation of 7.5
• Test 2 with a standard deviation of 7.5
• Test 1 with a standard deviation of 5.6
• Test 2 with a standard deviation of 5.6

Mrs. Bowen asked students in her class the average number of minutes each person spent reading each night. The results are recorded on the table.
What is the approximate difference between the standard deviation of boys’ and girls’ reading times?

• 3
• 8
• 9
• 11

The table below shows the area of several states.
Delaware has an area of 2,000 square miles.  Which is true if Delaware is included in the data set?

• The mean increase
• The range decreases
• The interquartile range decreases
• The standard deviation increases

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3