Mean Median Mode Range
Population and Sample Questions
Box and Whisker Plots
Finding estimate of population using Sample
Mean Median Mode Range
100
What is the outlier in the following data set:
1, 3, 12, 9, 7, 4, 7, 11, 28, 3, 1, 6
28
100
An on-line book seller randomly chooses 200 book buyers from its database and then surveys those book buyers to find out if they were satisfied with the time it took to deliver their orders. Is the sample biased?
No, it is a random sample.
100
Which Plot and Whisker Plot has a greater median value, Westminster Theater or Oak Grove Theater?
Westminster Ave
100
A high school has 1,800 students. A random sample of 80 shows that 24 have cell phones. Predict the number of students in the high school who have cell phones.
540 students.
100
What is the mode or modes of the following data set?
1, 3, 12, 9, 7, 4, 7, 11, 3, 1, 6
1, 3, and 7
200
What is the median in the following data set?
1, 3, 12, 9, 7, 4, 7, 11, 3, 1, 6
6
200
Cole surveys 80 high school students who are leaving a jazz concert to determine the favorite type of music among high school students. Is this sample biased?
Yes, they likely will like the same type of music since they are attending a jazz concert.
200
Which Plot and Whisker Plot has a greater range, Westminster Theater or Oak Grove Theater?
Westminster Theater.
200
A mint produces 150,000 souvenir coins each year. In a random sample of 400 coins, 3 have a misprint. Predict the number of coins that will have misprints in a year.
1,125 coins
200
What is the mode or modes of the following data set?
1, 3, 12, 9, 7, 4, 7, 11, 3, 7, 1, 6
7
300
What is the mean of the following data set?
1, 3, 12, 9, 7, 4, 7, 11, 3, 1, 6
5.8
300
The school board wants to study computer literacy among teachers. Which would represent a random sample of teachers?
A. all high school math teachers
B. teachers from the middle school whose name begins with N
C. all male teachers
D. every eighth teacher on an alphabetical list
D. every eighth teacher on an alphabetical list
300
Which Plot and Whisker Plot has a greater interquartile range, Greystone Inn or Sam's Place?
Greystone Inn.
300
In a random sample of 50 students out of a population of 400, Zach finds out that 7 have traveled to a foreign country. Predict the number that traveled to a foreign country out of the entire population.
56 students.
300
Which data set has a greater mean?
A. 23, 24, 19, 16, 29, 27, 12, 9
or
B. 23, 19, 40, 26, 25, 22, 10, 12
B. 23, 19, 40, 26, 25, 22, 10, 12 has 22.125
A has a mean of 19.875
400
What is the range of the following data set.
20, 22, 28, 32, 20, 23, 34, 30
14
400
Would you survey the entire population or just a sample? You need to find out how many children, visiting the Children's Museum on a Saturday, like MnMs better than Skittles.
Sample. Saturdays are busy days for the Children's Museum.
400
What is the lower quartile for the following data set?
13, 5, 7, 9, 10, 11, 10, 6, 6, 12
6
400
South Middle School has 580 students. Mr. Jarocki surveys a random sample of 30 students and finds that 12 of them have pet dogs. How many students at the school are likely to have pet dogs?
232 Students.
400
What is the mode of the following data set?
23, 24, 19, 16, 29, 27, 12, 9
no mode.
500
What is the best measure of central tendency for the following data set, the mean or the median?
16, 14, 19, 56, 20, 26, 24, 13, 14
median
500
Rowan wants to find out the exercise habits of local children. He plans to survey every 3rd child he sees coming out of a sporting goods store. He thinks his sample is not biased. Do you agree?
It is biased. Students likely have the same exercise habits since they are at a sporting goods store.
500
Which theater has a more predictable number of movies shown daily, Westminster Theater or Oak Grove Theater?
Oak Grove Theater.
500
A researcher catches 60 fish from different locations in a lake. He then tags the fish and puts them back in the lake. Two weeks later, the researcher catches 40 fish from the same locations. 8 of these 40 fish are tagged. Predict the number of fish in the lake.
300 fish
500
What is the best measure of central tendency for the following data set, the mean or the median?
16, 14, 19, 14, 20, 26, 24, 13, 14
mean