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Statistics Introduction
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What do you call the average of a set of numbers?
The mean.
How do you find the median of a set of numbers?
Arrange the numbers in order and choose the middle one.
What is the mode in a data set?
The number that appears most frequently.
What is the range of a set of numbers?
The difference between the highest and lowest values.
What tool can you use to visually display data frequencies?
A bar graph.
If you have the numbers 3, 5, and 7, what is their mean?
5.
In the data set 2, 2, 3, 4, 5, what is the mode?
2.
What is the range of the numbers 1, 3, 6, 10?
9 (10 - 1).
What graph displays data using parts of a circle?
A pie chart.
What is a frequency?
The number of times a value appears in a data set.
If a data set has no repeating numbers, what is the mode?
It has no mode.
What is a histogram?
A graph showing the frequency of data within intervals.
If a data set's mean, median, and mode are all the same, what is this data set likely to be?
Symmetrical.
How is data organized in a stem-and-leaf plot?
By separating values into a 'stem' (the leading digit(s)) and a 'leaf' (the trailing digit).
What is the median of the data set 4, 6, 6, 8, 10?
6.
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