What do you know (Prob Stats)

Given the set   4  7  9  12 
What is the mean of the set?

• 7
• 8
• 8.5
• 7.5

Tags

CCSS.6.SP.B.5C

Given the set   4  7  9  12 
What is the variance of the set? (choose nearest answer)

• 11.33
• 12.56
• 9.43
• 10.84

Given the set   4  7  9  12
What is the standard deviation of the set?

• 3.36
• 3.58
• 3.62
• 3.41

Given the set   2  5  6  9  12 
What is the median of the set?

• 5
• 6
• 5.5
• 7.5

Tags

CCSS.6.SP.B.5C

Given the set   2  5  6  9  12
What is the value of Q₁?

• 2
• 3.5
• 5.5
• 5

Tags

CCSS.6.SP.B.5C

Given the set   2  5  6  9  12
What is the value of Q₃?

• 12
• 9
• 11.5
• 10.5

Tags

CCSS.6.SP.B.5C

z-Score An Art class has a mean of 86 and standard deviation of 4. If you got and 88 in the class,    what z- score does that represent? 

• 0.5
• 1
• -0.5
• -1

Probability Distribution  60% of DNA samples taken can be used for evidence.  If 4 samples are taken, what’s the probability that exactly 1 can be used for evidence?

• 15%
• 18%
• 23%
• 26%

Percentile In a class of 6 people, the scores on the SAT are 600,700,800,650,900, and your score is 670. What is your percentile?

• 16th
• 33rd
• 22nd
• 50th

Poisson distribution Tom Brady averages 2.5 touchdown passes per game.  What’s the probability that he will throw exactly 3 touchdown passes in his next game?

• .213
• .346
• .524
• .412