This is a collection of numbers used to calculate a standard deviation
What is a data set?
24 / 2 X 3 + (6-3)2
What is 27?
The sum of all the values divided by the number of the values
This describes what a normal distribution looks like
What is a bell curve?
What is Observed value?
A standard deviation that is tall and narrow indicates what about the numbers related to the mean
What is the numbers are close to the mean?
30-10-4+6
22
Given the 10 grades of student's scores on the last spelling test, this number appears the most often?
The mean is located here, in a perfectly symmetric normal distribution.
What is at the center of the curve?
If a company claims that 20% of the m and m in a bag are red and there are a total of 300 m and ms in the bag, how many candies are red?
This would most likely decrease the standard deviation of a dataset
36 / 3(2+4)
What is 72?
8 data points were collected: 3,5,8,11,15,23,25, 27. If one more data point (40), was added, these 2 central tendendies would increase.
This percentage of data in a normal distribution falls below the mean.
This indicate the number of values minus 1 (N-1)
The values in a data set are all close to the mean, which tells us this about the standard deviation?
5 + 2 X (8-3)2 / 5
What is 15?
Luke scored the following number of goals during his last 4 lacrosse games: 2, 4, 8, 10 Matthew saved the following number of goals during his soccer game: 1,3,7,9. One player's median is higher, by 1 point.
Who is Luke?
This percentage of of students's heights fall between 65 and 75 inches IF the mean is 70 and the SD is 5.
What is 68%? (1 SD)
This measures is one categorical variable has the same distribution across two or more populations
What is homogeneity?
Class A and B have the SAME MEAN, but Class B has a larger standard deviation, indicating this relationship of Class B's scores to the mean?
What is they are spread out from the mean?
What is PEMDAS?
What is the range?
This percentage of students test scores falls between 72-88 when the mean is 80 and the standard deviation is 4)
This test if two categorical variables are related in one populations