Praxis Prep Statistics

The heights of the starting 5 players on a basketball team are 60 inches, 67 inches, 64 inches, and 65 inches.  If the mean or balance point of the players is 65, what is the height of the 5th player?

• 70
• 69
• 61
• 68

Tags

CCSS.6.SP.B.5C

How many students scored more than 80%?

• 10
• 13
• 7
• 15

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number
• Add the two numbers in the middle & then divide by two.
• They are both the median
• None of the above

Tags

CCSS.6.SP.B.5C

Find the class grade for a student with grades: Test 89%, Quiz 92, Homework 86%, and Classwork 95%.
Tests are 60% of the grade, Quiz 15%, Homework is 10% of the grade, and Classwork is 15% of the grade.

• 89.25
• 91.55
• 90.05
• i don't know

Tags

CCSS.6.NS.B.3

If the lowest 25% of test scores must retest, which range represents those who must retest?

• 57-76
• 76-86
• 86-92
• 92-100

Tags

CCSS.6.SP.B.5C

About 50 % of the data values are greater than what value?

• 12
• 15
• 22
• 31

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

True of false, 75% of the data values are greater than 18?

• True
• False, 75% of the values are greater than 16
• False, 50 % of the values are greater than 18
• False, 25% of the values are greater than 18

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

What is the standard deviation for the data given:

{12, 13, 29, 18, 61, 35, 21}

• 293.67

• 15.87

• 17.14

• 41.98

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

This data is normally distributed.  What percent of the data is in the shaded region?

• 68%
• 95%
• 99.7%
• 50%

Tags

CCSS.HSS.ID.A.4