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25 Cards in this Set
- Front
- Back
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range
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The difference between the least and greatest numbers in a data set.
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mean
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The sum of the values in a data set divided by the number of values. Also known as the average.
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median
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The middle value in a data set when the values are arranged in order.
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mode
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The value(s) that occur most often in a data set. If a data value does not appear more than once, there is no mode.
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outliers
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A value widely separated from the others in a data set.
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circle graph
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A circular graph that uses wedges to represent portions of the data set. A circle graph is also called a pie chart.
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sector
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A wedged piece part of a circle.
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bar graph
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A graph that uses bars to display data.
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vertical axis
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The axis that goes vertically (up and down). This axis contains the size of the data.
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horizontal axis
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The axis that goes horizontally (left to right). This axis contains a label for each bar.
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scale
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The evenly spaced marks on a bar graph’s vertical axis, used to measure the heights of the bars.
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interval
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The space between marked values on a bar graph’s scale.
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double bar graph
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A single graph comparing bar graphs for two related data sets.
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line plot
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A plot using stacked x’s showing distribution of a data set.
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Stem-and-leaf diagram
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A table showing the distribution of values in a data set by splitting each value into a stem and a leaf. For a two
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Box-and-whisker plot
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A five number summary consisting of the median, maximum, minimum, and the quartiles. The visual summary shows the center, the spread, and the overall range of distribution of the data.
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line graph
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A graph that uses a line to show how data changes over time. A line graph summarizes how piece of information are related.
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trend
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A clear direction in a graph that suggests how the data will behave in the future.
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double
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line graph
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scatterplot
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A graph showing paired data values as points.
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relationship
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Two variables are related if one affects the other.
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positive relationship
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Two sets of data increase at the same time, the sets show a positive relationship. If the data points slant upward to the right, then the variables are said to have a positive relationship.
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negative relationship
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One set of data increases, as the other decreases, the set shows a negative relationship. If the data points slant downward to the right, then the variables have a negative relationship.
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no relationship
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The plot is scattered everywhere, there is no relationship between the sets of data.
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trend line
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A line drawn through a set of data points to show a trend in the data values.
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