Set Theory, Logic, and Measures of Central Tendency Practice

Answer explanation

The symbol "⊃" is "superset"

"Superset" means the first set contains everything in the second set, but also other elements as well. For example:

{ 1, 2, 3 } ⊃ { 1, 2 }

For the symbol "⊂" means "subset".

"Subset" means that the first set contains some, but not all the elements of the second set, and that every element in the first set is also in the second set. For example:

{ 1, 2 } ⊂ { 1, 2, 3 }

Notice that, just like greater than, ">", and less than, "<", superset and subset are opposites. So if:

S ⊃ A

is true, then

A ⊂ S

is also true.

In which diagram does the shaded area show the union of A and B?

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• 
• 
• 
• 

How many students took the survey?

• 32
• 47
• 53
• 56

What does this symbol ( ∩ ) represent in set theory?

• Union
• Intersection
• Disjointed
• Subset

What is the cardinal of the set, H = {w, o, n, d, e, r, f, u, l}

• 10

• 9

• 8

• 7

• OR

• AND

• NOT

• BUT

What does the symbol ~ mean?

• NOT

• AND

• OR

• BUT

• If p, then not q.

• P and not q.

• P or not q.

• If p and not q.

The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below: 
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?

• 5
• 6
• 9
• 11

A data set can have more than one _______

• Median
• Mode
• Mean
• Midrange