Definitions
Measure you should use for categorical data
What is Mode?
To find the mean you do this with your data
What is add all of the data and divide by the number of data points.
The median of the data set: 12, 17, 14, 19, 15.
What is 15?
Find the range of this data set: 5, 8, 10, 12, 15.
What is 10?
The best measure for abnormal data?
What is Median?
This value affects the mean more than the median.
What is the outlier?
The mean of 3, 7, 9, and 11.
What is 7.5
The median of these six test scores: 70, 75, 80, 85, 90, 95.
What is 82.5?
Find the range of these test scores: 72, 85, 88, 90, 94, 100.
What is 28?
What is the best measure for normally distributed data?
Questions that have a variety of answers.
What is Statistical Questions?
The average price of a dozen eggs at five stores is calculated from these prices: $2.25, $2.50, $2.75, $3.00, and $3.50.
What is $2.80
The mode of this data set: 0, 1, 2, 2, 0, 3, 0.
What is 0?
Find the interquartile range (IQR) of this data set: 2, 4, 6, 8, 10, 12, 14.
What is 6?
You surveyed your class on their favorite color, and the results were: red, blue, blue, green, red, blue. Which measure of center makes the most sense to report?
What is the mode?
The riddle used to remember each measure
Find the mean height (in inches) of five students with the following heights: 58, 60½, 61¼, 59, and 60.
What is 59.75 inches?
The mode(s) of this set: 2, 3, 3, 5, 5, 5, 3, 6.
What is 3 and 5?
Find the IQR of this data set: 20, 22, 24, 26, 28, 30, 32, 34.
What is 10?
You recorded how many books students read: 2, 3, 3, 4, 5, 6, 20. What measure of center is best to use?
What is the median? (Because 20 is an outlier)
This measure splits data into four equal groups.
What is a Quartile?
A student scores 80, 85, 90, and needs an average of 88. What is the minimum they need on the 4th test?
What is 97?
What is the mode for the data set: 4, 8, 6, 2, 5, 9, 7
What is no mode?
For this data set: 15, 16, 17, 18, 20, 22, 24, 30, find both the range and the IQR.
What is range = 15 and IQR = 6
This data set shows hours of sleep: 6, 6, 7, 8, 8, 9, 10. What is the best measure to describe a typical amount?
What is the mean?