Measures of Central Tendency (Mean, Median, Mode)
Find the mean of the following set of data:
13, 23, 21, 20, 21, 24, 18
What is the mean is 20
List the sample space for flipping a coin and rolling a 6 sided dice.
What is 1H, 2H, 3H, 4H, 5H, 6H, 1T, 2T, 3T, 4T, 5T, 6T
The school cafeteria offers three sandwiches, four vegetables, and five juice drinks daily. The number of possibilities offered each day is.
What is 60.
Find the range for the data set:
12, 14, 11, 10, 9, 10, 9
What is 5
Find Q1 for the data set:
9, 6, 2, 19, 13, 27, 29
What is 6
What is the mode?
10, 9, 4, 4, 8, 8, 8, 4, 7, 6, 11, 14, 27
What is 4 and 8
A bag has two green marbles, two blue marbles, and one yellow marble. If you were to reach into the bag, what would the probability that you pull out a blue marble be?
What is 2/5
Pick a team of three people from a group of ten people. How many possibilities are there?
What is 120 remember: C(10,3) 10!/3!
Find the midrange for the data set:
44, 12, 6, 18, 9
What is 25
Find Q3 for the data set:
50, 4, 20, 10, 6, 35, 33, 16
What is 34
What is the median?
14, 8, 17, 21 11, 3, 13, 1
What is 12
When rolling a number cube, the odds in favor of getting a number less than 2.
What is 2 to 4 or 1 to 2.
How many ways can 1st, 2nd, and 3rd place be determined in a race of 9 people?
What is 504. P(9,3)
The sample variance for the following data set:
16, 45, 32, 45, 12, 34, 23
What is 172.95 (sample)
What is 148.2449 (population)
A data set has a mean of 72 and a standard deviation of 10.3. Find the z-score for x=85.
What is 1.26 (85-72)/10.3
Find the mean of the frequency table:
Number of people: Frequency:
1 5
2 6
3 3
4 2
What is 2.125.
Find the expectation for this experiment:
Outcome Probability
5 0.5
6 0.23
7 0.1
8 0.08
9 0.07
10 0.02
What is 6.05 (5*.5)+(6*.23)+(7*.1)+(8*.08)+(9*.07)+(10*.02)
Mark has a pair of boots and a pair of sneakers. He has one pair of white socks, one pair of black socks, and one pair of brown socks. He has shorts and pants. He Has a shirts in red, blue, green, and black. The number of possible outfits Mark can form are.
What is 48. (2*3*2*4)
The sample standard deviation of the following data set:
152, 569, 248, 216, 288, 854, 685, 489, 965
What is 293.8382 (sample)
What is 277.0334 (population)
A data set has a mean of 79 and a standard deviation of 10.5. Find the z-score for x=50.
What is -2.76 (50-79)/10.5
Frank has 3 nickels, 5 dimes, and 2 quarters.
Find the mean, median, mode of the amount of money of his coins in cents.
What is: mean: 11.5 cents median: 10 cents mode: 10 cents
Suppose it costs $4 to play a game in which a single die is rolled and you win the amount of dollars that the die shows. What is the expectation for the game?
What is -50 cents
The board of directors of a corporation must select a president, secretary, and a treasurer. How many possible ways can this be accomplished if there are 25 members on the board?
What is 13,800 remember: P(25,3)
The sample standard deviation of the following data set:
3.8, 4.2, 1.9, 3.2, 2.5, 2.3
What is 0.9 (sample)
What is 0.8 (population)
Find Q1, Q2, and Q3 for the following set:
7, 1, 0, 4, 8, 3, 10
What is you should have points at the numbers: 0 (least value) 1 (lower quartile) 4 (median) 8 (upper quartile) 10 (greatest value)