Sample, Population, and Measures of Center
A school wants to know the average number of hours students spend reading each week.
They survey 50 students out of the entire school.
π Identify the population and the sample.
Sample: 50 Students
Population: The entire school
A bag contains red, blue, and green marbles.
You reach in and pull out one marble without looking.
π Name one possible outcome of this event.
Multiple answers: a red marble, a blue marble, or a green marble.
A rectangular prism has a length of 6 cm, width of 4 cm, and height of 2 cm.
π What is the volume of the prism? (with units)
48 cubed centimeters
A car travels 120 miles in 4 hours.
π What is the unit rate in miles per hour?
30 Miles per hours
Miss Angst has 2 pet what?
Cats πΊ
The numbers of books read by students are:
3, 5, 5, 7, 10
π Find the mean, median, and mode.
Mean: 6
Median: 5
Mode: 5
A spinner is divided into 4 equal sections labeled A, B, C, and D.
π What is the probability of landing on A?
1/4
A box measures:
π What is the surface area of the rectangular prism? (with units)
Answer 62 square inches
2ork: 2(5x3)+2(3x2)+2(5x2)
You buy 6 notebooks for $9.
π What is the cost per notebook?
$1.50 Per Notebook
What is Miss Angst's Favorite Color?
Pink
The test scores are:
65, 72, 78, 78, 81, 90
π What is the range of the data set?
Range: 25
A coin is flipped 20 times and lands on heads 12 times.
π What is the experimental probability of landing on heads?
π What is the theoretical probability of landing on heads?
Experimental: 12/20
Theoretical: 1/2
A cylinder has a radius of 4 cm and a height of 10 cm.
Use Ο β 3.14.
π What is the volume of the cylinder? (with units)
Hint: Area of base = 3.14r2
502.4 cubed cm
Complete the proportion:
3/5 = x/15
π What is the value of x?
x = 9
Where did Miss Angst go to middle school?
Liberty Junior
A principal wants to know if students like school lunches.
She only surveys students who eat lunch in the cafeteria every day.
π Is this sample biased or unbiased? Explain why.
Biased. If they eat it every day, we can assume they might like it more than people who pack.
Tree Diagram OR Counting Principle:
You are choosing an outfit.
You have 3 shirts (red, blue, green) and 2 pairs of pants (black, khaki).
π How many different outfits can you make?
RB, RK, BB, BK, GB, GK
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YIPPIE
FREEEE SPACE π«Άπ½π¦π·βπ§π½ββοΈβ¨
CONGRATS
What is Miss Angst's favorite restaurant?
(Hint: there is a location at Liberty Center)
Cheesecake Factory or agave and rye
I just deleted this because it was too hard and im too lazy to explain
new question: find the median of
11, 10, 9, 8, 12, 20, 24, 30
Median:
You flip a coin and then spin a spinner with 4 equal sections labeled 1, 2, 3, and 4.
π What is the probability of getting heads AND landing on an even number?
1/4
work: (1/2)(2/4)
A can of soup has:
Use Ο β 3.14.
π What is the total surface area of the cylinder? (with units)
Hint: Area of the 2 circle bases = 2β’3.14β’r2
Area lateral surface = 2β’3.14β’rβ’h
Surface Area = 533.8 square cm
A jogger runs 3 miles in 30 minutes, 6 miles in 60 minutes, and 9 miles in 90 minutes.
π Is this relationship proportional?
π Write an equation that represents the relationship.
Yes
The constant of proportionality is 10 minutes per mile (k=10)
y =10x
Where did Miss Angst go to college?
Ohio University