Statistics and Probability Review

A bag has 3 red marbles, 2 blue, 1 yellow and 4 green. What is the theoretical probability of pulling a red?

• 3/9

• 3/10

• 1/10

• 1/3

In a cup are the numbers 1 - 20. Find the theoretical probability of 
picking an even number. 

• 10/20
• 1/2
• 1/20
• 20/20

Roberto wants to know the favorite sport of adults in his hometown.  He surveys 50 adults at a baseball game.  Is this random or biased sampling?

• Random
• Biased

What is a the meaning for "median"?

• fair share
• middle
• repeats the most
• variation

What does "mode" mean?

• average
• middle
• repeats the most
• variation

What does "mean" mean?

• average
• middle
• repeats the most
• variation

Find the mode of these numbers:
4,3,6,4,3,6,6,3,2,1,3

• 3
• 6
• 4
• 2

Which restaurant has a higher median wait time?

• Lucy's Steakhouse
• Gary's Grill
• They are the same

A bag contains 4 red marbles, 7 blue marbles and 5 green marbles. What is the probability of NOT choosing a red marble if the answer was to be simplified.

• 4/16
• 3/16
• 3/4
• 12/16

What data value is the upper quartile (Q3)?

• 64
• 62
• 66
• 58