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ISEE Upper Level Math : Data Analysis and Probability

Study concepts, example questions & explanations for ISEE Upper Level Math

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All ISEE Upper Level Math Resources

6 Diagnostic Tests 244 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #1 : Data Analysis And Probability

Venn

Refer to the above Venn diagram.

Define universal set $U = \mathbb{N}$ , the set of natural numbers.

Define sets and as follows:

$A = \left \{ 1,5,9,13,17,21,... \right \}$

$B = \left \{ 2,5,8,11,14,17...\right \}$

Which of the following numbers is an element of the set represented by the gray area in the diagram?

Possible Answers:

104

101

105

103

102

Correct answer:

104

Explanation:

The gray area represents the set of all elements that are in but not in .

is the set of integers that, when divided by 3, yield remainder 2. Therefore, we can eliminate 102 and 105, both multiples of 3, and 103, which, when divided by 3, yields remainder 1.

is the set of integers that, when divided by 4, yield remainder 1. Since we do not want an element from this set, we can eliminate 101, but not 104.

104 is the correct choice.

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Example Question #2 : Data Analysis And Probability

Venn

In the above Venn diagram, the universal set is defined as $U = \left \{ a, b, c, d, e, f, g, h\right \}$ . Each of the eight letters is placed in its correct region.

What is $A \cap B$ ?

Possible Answers:

$A \cap B = \left \{ b,c,d,e,g,h \right \}$

$A \cap B = \left \{ a,c,f \right \}$

$A \cap B = \left \{ b,d,e,g,h \right \}$

$A \cap B = \left \{ a,b,d,e,f,g,h \right \}$

$A \cap B = \left \{ a,f \right \}$

Correct answer:

$A \cap B = \left \{ a,f \right \}$

Explanation:

$A \cap B$ is the intersection of sets and - that is, the set of all elements of that are elements of both and . We want all of the letters that fall in both circles, which from the diagram can be seen to be and . Therefore,

$A \cap B = \left \{ a,f \right \}$

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Example Question #3 : Venn Diagrams

Venn

In the above Venn diagram, the universal set is defined as $U = \left \{ a, b, c, d, e, f, g, h\right \}$ . Each of the eight letters is placed in its correct region. Which of the following is equal to $\overline{A\cap B}$ ?

Possible Answers:

$\overline{A\cap B} = \left \{ b,d,e,g,h\right \}$

$\overline{A\cap B} = \left \{ c\right \}$

$\overline{A\cap B} = \left \{ b,c,d,e,g,h\right \}$

$\overline{A\cap B} = \left \{ a,f\right \}$

$\overline{A\cap B} = \left \{ a,c,f\right \}$

Correct answer:

$\overline{A\cap B} = \left \{ b,c,d,e,g,h\right \}$

Explanation:

$\overline{A \cap B}$ is the complement of $A \cap B$ - the set of all elements in not in $A \cap B$ .

$A \cap B$ is the intersection of sets and - that is, the set of all elements of that are elements of both and . Therefore, $\overline{A \cap B}$ is the set of all elements that are not in both and , which can be seen from the diagram to be all elements except and . Therefore,

$\overline{A\cap B} = \left \{ b,c,d,e,g,h\right \}$ .

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Example Question #4 : Venn Diagrams

Venn

Possible Answers:

$\overline{A\cup B} = \left \{ a,f\right \}$

$\overline{A\cup B} = \left \{ b,d,e,g,h\right \}$

$\overline{A\cup B} = \left \{ c\right \}$

$\overline{A\cup B} = \left \{ b,c,d,e,g,h\right \}$

$\overline{A\cup B} = \left \{ a,c,f\right \}$

Correct answer:

$\overline{A\cup B} = \left \{ c\right \}$

Explanation:

$\overline{A\cup B}$ is the complement of $A\cup B$ - the set of all elements in not in $A\cup B$ .

$A\cup B$ is the union of sets and - the set of all elements in either or . Therefore, $\overline{A\cup B}$ is the set of all elements in neither nor , which can be seen from the diagram to be only one element - . Therefore,

$\overline{A\cup B} = \left \{ c\right \}$

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Example Question #3 : Data Analysis And Probability

The following Venn diagram depicts the number of students who play hockey, football, and baseball. How many students play football and baseball?

Problem_9

Possible Answers:

Correct answer:

Explanation:

The number of students who play football or baseball can by finding the summer of the number of students who play football alone, baseball alone, baseball and football, and all three sports.

30+20+3+3=56

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Example Question #4 : Data Analysis And Probability

A class of students was asked whether they have cats, dogs, or both.The results are depicted in the following Venn diagram. How many students do not have a dog?

Question_5

Possible Answers:

Correct answer:

Explanation:

First, calculate the number of students with a dog:
9+2=11

Next, subtract the number of students with a dog from the total number of students.

30-11=19

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Example Question #5 : Data Analysis And Probability

If a standard die is rolled, what is the probability of getting a 1 or a 2?

Possible Answers:

$\dpi{100} \frac{1}{6}$

$\dpi{100} 2$

$\dpi{100} \frac{1}{3}$

$\dpi{100} \frac{1}{2}$

Correct answer:

$\dpi{100} \frac{1}{3}$

Explanation:

We need to know the total number of possibilities, and the total number of ways to achieve our goal.

A standard die has 6 faces, so there are a total of 6 numbers that we could roll.

We want to roll a 1 or a 2, which means there are 2 ways that we can succeed (rolling a 1 or a 2).

Thus, we have a probability of success as $\dpi{100} \frac{2}{6}$ which reduces to $\dpi{100} \frac{1}{3}$ .

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Example Question #6 : Data Analysis And Probability

The beverage menu from a restaurant reads as follows:

$\begin{matrix} \textrm{\underline{Beverage}} & \textrm{\underline{Price}} \\ \textrm{Soda}& \$1.29 \\ \textrm{Iced Tea} & \$1.39 \\ \textrm{Coffee} & \$1.69 \\ \textrm{Hot Tea} & \$1.59 \\ \textrm{Milk} & \$1.49 \end{matrix}$

Ten friends go out for drinks. They order four sodas, two coffees, two iced teas, a milk, and a hot tea. One of the ten agrees to leave the entire amount of the tip, which is to be 20% of the check. What is the amount of the tip (round to the nearest dime)?

Possible Answers:

$\$ 3.10$

$\$ 2.90$

$\$ 2.70$

$\$ 3.30$

$\$ 3.50$

Correct answer:

$\$ 2.90$

Explanation:

The costs of the beverages will be as follows:

$\begin{matrix} \textrm{4 Sodas}& \4 \times $1.29 = \$5.16 \\ \textrm{2 Iced Teas} & 2 \times \$1.39 = \$2.78 \\ \textrm{2 Coffees} &2 \times \$1.69 = \$3.38 \\ \textrm{1 Hot Tea} & \$1.59 \\ \textrm{1 Milk} & \$1.49 \end{matrix}$

Add these amounts:

$\begin{matrix} \; \$5.16\\ \; \; 2.78\\ \; \; 3.38\\ \; \; 1.59\\\; \; \underline{1.49}\\ \$14.40 \end{matrix}$

20% of $14.40 is $14.40 \times 0.20 = 2.88$ , or $2.90 when rounded to the nearest dime.

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Example Question #6 : Data Analysis

Temperature

Refer to the above graph, which shows the high temperatures in the town of Smithville over seven days.

On how many days that week did Smithville see a peak temperature 75 degrees or greater?

Possible Answers:

Correct answer:

Explanation:

There were four days that saw a peak temperature of 75 degrees or greater:

Monday: 76 degrees

Tuesday: 80 degrees

Wednesday: 77 degrees

Friday: 78 degrees

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Example Question #7 : Data Analysis

Temperature

Refer to the above graph, which shows the high temperatures in the town of Smithville over seven days.

Which day of this week saw the highest peak temperature?

Possible Answers:

Thursday

Tuesday

Friday

Wednesday

Monday

Correct answer:

Tuesday

Explanation:

The highest point on the line graph is located at Tuesday.

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All ISEE Upper Level Math Resources

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ISEE Upper Level Math : Data Analysis and Probability

Study concepts, example questions & explanations for ISEE Upper Level Math

All ISEE Upper Level Math Resources

Example Questions

Example Question #1 : Data Analysis And Probability

Example Question #2 : Data Analysis And Probability

Example Question #3 : Venn Diagrams

Example Question #4 : Venn Diagrams

Example Question #3 : Data Analysis And Probability

Example Question #4 : Data Analysis And Probability

Example Question #5 : Data Analysis And Probability

Example Question #6 : Data Analysis And Probability

Example Question #6 : Data Analysis

Example Question #7 : Data Analysis

All ISEE Upper Level Math Resources

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