Mean, Median & Mode
What is the average of a set of numbers called?
Mean
Probability values range between these two numbers.
0 and 1
This graph uses bars to compare categories.
bar graph
The difference between the largest and smallest values in a data set.
Range
Every member of a population has an equal chance of being selected.
Random sample
What is the middle value in an ordered data set called?
median
What is the probability of flipping a fair coin and getting heads?
1/2
This graph shows parts of a whole using slices.
pie chart
This measure describes how spread out data are from the mean.
standard deviation
The entire group being studied.
Population
What is the most frequently occurring value in a data set?
mode
What is the probability of rolling a 6 on a fair six-sided die?
1/6
This graph displays frequency using connected bars.
histogram
The square of the standard deviation.
variance
A smaller group selected from a population.
Sample
Find the mean of 2, 4, 6, 8.
5
If an event is certain to happen, its probability is this number.
1
This graph shows the relationship between two variables using points.
scatter plot
If all values in a data set are the same, the standard deviation is this.
0
A survey question that suggests a particular answer is called this.
biased question
Find the median of 3, 5, 7, 9, 11.
7
What is the probability of drawing an Ace from a standard deck of 52 cards?
4/52 or 1/13
This display shows the minimum, Q1, median, Q3, and maximum.
box-and-whisker plot
The difference between Q3 and Q1.
interquartile range (IQR)
The process of collecting information from a sample.
Survey