Z Scores!!!
The formula to find the Z-Score of a data value
What is (Data Point - Mean)/Standard Deviation?
What there must be on a graph for us to claim there is an outlier.
What is a gap?
The percent of data between Q1 and Q3.
What is 50%?
The meaning of CSOCS.
What is Context, Shape, Outliers, Center, Spread?
What BS stands for in this class.
What is Bad Statistics?
How far does a data point have to be to be considered unusual?
What is Z-Score less than -2/greater than 2 or 2 Standard Deviations?
The two formulas we use to create a range where any data point outside of it are considered outliers.
What is Q1-1.5IQR and Q3+1.5IQR?
The percentages we use for within 1 St.Dev, 2 St.Devs, and 3 St.Devs on a normal distribution.
What is 68%, 95%, and 99.7%?
The mean in comparison to the median when the data is skewed left, right, or symmetric.
What is less than, greater than, equal to?
What are the steps to get a statistical summary on your calculator?
What is list/spreadsheet, enter data, 4,1,1?
Women’s heights have a mean of 63.6 in. and a standard deviation of 2.5 inches. The z score corresponding to a woman with a height of 70 inches.
What is 2.56?
Outliers in this data using the 1.5IQR rule and the boundaries calculated:
26, 14, 13, 2, 40, 18, 12, 15, 16, 18, 22, 32
What is 40 and -2.25 to 39.75?
If the distribution of the scores on an exam has a mean of 100, and the 16th percentile is 80, the 84th percentile score.
What is 120?
Describe the graph:
Stupid game won't let me copy a graph.
What is...
Context: None
Shape: Right Skew
Outliers: None
Center: Median of 4
Spread: Range of 1-13
Mr. Mac's Middle Name.
What is Michael
Three students take equivalent stress tests with a mean of 128 and a standard deviation of 34, the z-scores of a score of 144, 90, and 112.
What is 0.47, -1.12, -0.47?
The five number summary and outliers for this data set: 86,111,113,114,111,111,122,130,93,126,95,102,107, 109,130,129,126,170,88,106,114,87,113,133,146, 111,83,135,110,114,121,122,117
What is Min: 83, Q1: 106, Median:114, Q3: 126, Max: 170, and Outlier: 170?
The mean is 1400 gallons with a standard deviation of 300 gallons. The 16th percentile, 95th percentile, and median value.
What is 1100, 2000, and 1400?
Compare these two box plots.
What is
Context: Test Scores between Kyle and Amira
Shape: Left skew vs fairly symmetric
Outliers: None
Center: Kyle has the higher center
Spread: Kyle larger IQR, Amira larger range
What we call an outcome if the probability is less that 5%.
What is statistically significant?
The percent of people have an IQ higher then Albert Einstein if his IQ is 145, the mean score is 100 with a standard deviation of 16.
What is 0.25%?
A box plot for this data:
60,63,53,66,65,58,51,55,58,51,58,62,53,66,61,51,65,52,54,50
What is Mr. Mac is too lazy to draw the box plot, upload it, and then copy it here so yours looks good enough?
The 16th percentile is $26,800 and the 84th percentile is $51,000. The median and the standard deviation.
What is $38,900 and $12,100?
The box plot for these two data sets and the comparison.
Male - 43.5, 91.5, 7.5, 0.0, 0.0, 28.5, 199.5, 57.0, 142.5, 8.0, 9.0, 36.0, 0.0, 78.0, 34.5, 0.0, 57.0, 151.5, 8.0, 0.0
Female - 10.0, 90.6, 48.5, 50.4, 57.4, 99.6, 0.0, 5.0, 0.0, 0.0, 5.0, 2.0, 10.5, 5.0, 47.0, 0.0, 5.0, 54.0, 0.0, 48.6
The number of people you need in a room for there to be at least a 50% chance any two people share the same birthday.
What is 23?