# Statistics

Statistics

1.Use the following grades and numbers of students achieving those grades. Make a Cumulative Frequency Chart for the above grades.

Grade number of students getting the grade

A 19

B 11

C 9D 5

F 6

2. Find the measures of central tendency: mean, median, mode.

3. Find the measures of dispersion range, standard deviation.

4. What does standard deviation measure?

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Probability

1. Find the probability of rolling at least one 3 in 4 rolls of a fair single die.

2. Find the probability of flipping a coin and getting at least one tail in 4 flips.

3. Chart for Heads and Tails Probability for flipping 3 coins at once or one coin 3 times.

HHHHHT

H TH

H T T

THH

THT

TTH

T TT

4 Find the following probabilities below using the chart above. Leave answers as fractions or decimals.

1. P( 3 tails)________________

2. P(3 heads)_______________

3. P(more than 1 head)_______

4. P(fewer than 3 tails)_______

5. P(At least two heads)________

5.Use a standard deck of 52 playing cards comprised of 13 hearts, 13 spades, 13 diamonds, and 13 clubs find the following probabilities when selecting one card at a time from the deck.

SPADES BLACK A K Q J 10 9 8 7 6 5 4 3 2

HEARTS RED A K Q J 10 9 8 7 6 5 4 3 2

DIAMONDS RED A K Q J 10 9 8 7 6 5 4 3 2

CLUBS BLACK A K Q J 10 9 8 7 6 5 4 3 2

1. P(Heart)

2. P (Red Card)

3. P(King)

4. P(Ace) or P(diamond)

5. Find the probability of selecting a club and then a spade; you put the first card back into the deck before selecting the second card

6. Find the probability of selecting a Queen and then a spade; you do not put the first card back into the deck before selecting the second card

7. How many ways can 13 third graders line up for the launch line.

8. How many 9-digit zip codes can be formed if there are 10 numbers available with no restrictions.

9. What number is the answer using nCr where n = 12 and r =4

10. What number is the answer using nPr where n =15 and r= 3

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Finance

1.Find the Amount of savings if the principle is $25,000, APR = 3.5% time 5 years compounded quarterly. Use formula 2

http://www.myarmortizationchart.com/

You are buying a house for $350,000. Select 30 years mortgage

1. Find the 20% down payment

2.What is the amount of the mortgage?

3. What is the monthly payment?

4. What are the monthly taxes?

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