Theoretical or Experimental?
Finding/Predicting Probability
Box and Whisker Plots
Sampling Methods
Misc.
100
A bag contains marbles. A student physically draws a marble, records the color, and replaces it each time. Is this an example of experimental probability or theoretical probability?
Experimental
100
A bag has 8 red, 6 blue, and 6 green marbles. What is the probability of picking a red marble? Be sure to simplify your fraction!
2/5
100
What is the median amount of money earned?
$35
100
A student makes the following test grades: 80, 75, 75, 71, 82, 70, 83. Which test score would be the most surprising next score?
A.) 100
B.) 80
C.) 70
D.) 81
A
Must explain reasoning for full credit.
100
A probability of 0.2 would be described as:
A.) Unlikely
B.) Likely
C.) Certain
D.) Impossible
A
Must have reasoning for full credit.
200
A standard die has 6 equal sides, numbered 1-6. The probability of rolling a 2 is 1/6. Is this an example of experimental probability or theoretical probability?
Theoretical
200
A sample shows 13 out 20 students prefer hamburgers over country fried steak. If there are 400 students total, how many students would you predict would prefer hamburgers?
About 260 students
200
What is the range of money earned?
$45
200
Which sample is the most unbiased?
A.) Surveying 2nd load students
B.) Surveying 2 students in the same class
C.) Surveying every 15th student entering school
D.) Surveying only your friends
C
Must have full reasoning for credit
200
A weather forecast says there is a 75% chance of rain tomorrow. What is the likelihood that it will rain tomorrow?
Likely
300
A student rolls a die 20 times and records how many times they get a 4. Is this an example of experimental probability or theoretical probability?
Experimental
300
A die (1-6) is rolled 600 times. Predict how many times you would expect to roll a number less than 5. Simplify your fraction.
About 400 times
300
What is the interquartile range of money earned?
$25
300
What does increasing sample size do?
A.)Increases bias
B.) Decreases reliability/credibility
C.) Increases reliability/credibility
D.) Has no effect at all.
C
Must have reasoning for full credit
300
Which period probably read the MOST books?
Second period
400
The probability of flipping a coin and landing on heads is 1/2. Is this an example of experimental probability or theoretical probability?
Theoretical
400
A class has 12 students wearing t-shirts, 15 students wearing hoodies, and 3 students wearing sweaters. What is the probability of choosing a student wearing a sweater? Simplify!
1/10
400
Show A's lower quartile is the same as Show B's __________________
Upper Quartile
400
There is a new landfill opening up in Toccoa. You want to know how the residents feel about adding a new landfill. Determine which sampling method is the most valid.
A.) Survey 100 residents that live closet to the new landfill
B.) Survey every 12th resident on the SCMS staff roster.
C.) Survey every 12th resident that is registered to vote in Stephens County.
C
Must have reasoning for full credit.
400
What percentage of people earned more than $25?
75% of people
500
Write the difference between theoretical probability and experimental probability on your slate. Don't be sloppy. Make it a complete sentence at least.
Answers may vary.
500
Ms. Pruitt picks a marker out of her bag, puts it back, and picks again.
A) Is this experimental probability or theoretical probability?
B) Based on the data, what is the probability that the next marker Ms. Pruitt will grab is green? Simplify!
A: Experimental
B: 3/10
500
Which show most likely has an outlier? How does the outlier affect the average?
Show B, brings down the mean
500
You ask 75 randomly chosen students at SCMS how many movies they watch each week. 21 students said they watch one movie a week. If there are 1200 students in the school, estimate the number of students at SCMS who watch one movie a week.
About 336 students
500
What is the lower quartile of the following data:
31, 22, 17, 5, 23, 15, 10, 20, 17
12.5