Term
| Frequency Distribution (or Frequency Table) |
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Definition
| lists data values (either individually or by groups of intervals), along with their corresponding frequencies or counts |
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Term
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Definition
| are the smallest numbers that can actually belong to different classes |
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Term
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Definition
| are the largest numbers that can actually belong to different classes |
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Term
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Definition
| are the numbers used to separate classes, but without the gaps created by class limits |
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Term
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Definition
| can be found by adding the lower class limit to the upper class limit and dividing the sum by two |
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Term
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Definition
| is the difference between two consecutive lower class limit or two consecutive lower class boundaries |
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Term
| What is the formula for finding class width |
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Definition
max value - min value number of classes |
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Term
| Relative Frequency Distribution |
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Definition
includes the same class limits as a frequency distribution, but relative frequencies are used instead of actual frequencies class frequency sum of all frequencies |
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Term
| What is the formula for Cumulative Frequency Distribution |
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Definition
The cumulative frequency for a class is the sum of the frequency for that class and all previous classes. a + b = 1st cumulative frequency a + b + c = 2nd cumulative frequency a + b + c + d = 3rd cumulative frequency,... |
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Term
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Definition
| A bar graph in which the horizontal scale represents the classes of data values and the vertical scale represents the frequencies |
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Term
| Relative Frequency Histogram |
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Definition
| Has the same shape and horizontal scale as a histogram, but the vertical scale is marked with relative frequencies instead of actual frequencies |
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Term
| What's the characteristic of a Frequency Polygon? |
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Definition
| Uses line segments connected to points directly above class midpoint values |
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Term
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Definition
| A line graph that depicts cumulative frequencies |
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Term
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Definition
| Consists of a graph in which each data value is plotted as a point (or dot) along a scale of values |
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Term
| Stemplot (or Stem-and-Leaf Plot) |
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Definition
| Represents data by separating each value into two parts: the stem (such as the leftmost digit) and the leaf (such as the rightmost digit) |
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Term
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Definition
| A bar graph for qualitative data, with the bars arranged in order according to frequencies |
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Term
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Definition
| A graph depicting qualitative data as slices of a pie |
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Term
| Scatter Plot (or Scatter Diagram) |
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Definition
| A plot of paired (x,y) data with a horizontal x-axis and a vertical y-axis |
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Term
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Definition
| Data that have been collected at different points in time |
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