Central Tendancy
Z - Score
Normal distribution
Standard Deviation
Misc
100
Calculate the Mode of the following data set:
2, 4, 1, 2, 5, 7, 7, 8, 4, 3, 2, 1, 8, 9, 2, 4
2
100
What is the formula for Z scores?
:max_bytes(150000):strip_icc()/zscore-56a8fa785f9b58b7d0f6e87b.GIF)
100
What is another name for a normal curve?
Bell curve
100
Find the mean and standard deviation of 5, 7, 4, 9, 10.
mean = 7
sd = 2.28
100
A set of data is normally distributed. What percent of the data is greater than the mean?
50%
200
Calculate the Median of the following data set:
2, 4, 1, 2, 5, 7, 7, 8, 4, 3, 2, 1, 8, 9, 2, 4
4
200
Calculate the z score if the mean is 23.5, standard deviation is 3.3 and your point is 19.2
-1.3
200
What percent of data falls within 2 standard deviations of the mean?
95%
200
Find the standard deviation of the following data: 13, 10, 0, 9, 13, 11
4.42
200
The ages of participants in a curling tournament are normally distributed, with a mean of 40 and a standard deviation of 10 years. What percent of the bowlers are between 40 and 50 years old?
34%
300
Calculate the Mean of the following data set:
2, 4, 1, 2, 5, 7, 7, 8, 4, 3, 2, 1, 8, 9, 2, 4
4.31
300
What is the percentage of data to the right of the z-score -1.2?
88.5%
300
If your mean is 45 and SD is 5. what percentage of people fall within 40-50
68%
300
Find the Standard Deviation of the following data: 20, 9, 35, 30, 12, 7, 7
10.6
300
The mean score on a standardized test (which follow a normal curve) is 100, with a standard deviation of 15. Olivia's mark was one standard deviation below the mean. What was her mark?
85
400
Calculate the Standard Deviation of the following data set:
2, 4, 1, 2, 5, 7, 7, 8, 4, 3, 2, 1, 8, 9, 2, 4
2.7
400
If Matt scored a 78 on a test with a mean of 68 and a SD of 5.5. What was his z-score?
1.82
400
if the mean of a set of data is 23 and the SD is 6 what percentage of data fall between 11 and 29?
81.5%
400
A manufacturer offers a warranty on its tablets. The tablets have a mean lifespan of 3.4 years with a standard deviation of 0.4 years. What percentage of tablets last between 3.4 and 4.2 years?
47.5%
500
Calculate the range of the following set
2, 4, 1, 2, 5, 7, 7, 8, 4, 3, 2, 1, 8, 9, 2, 4
1-9
500
Determine the percent of data between the following z-scores: z= -2.25 and z= 1.75
94.77%
500
If the mean shoe size of SHSS is 10 with a SD of 2, how many people would have a larger shoe size than 12 and smaller than 8 if there are 400 people in school
128
500
A manufacturer offers a warranty on its tablets. The tablets have a mean lifespan of 3.4 years with a standard deviation of 0.4 years. What should the warranty be if the manufacturer wants to repair no more than 2.5% of tablets?
2 and a half years