Analyzing The Shape of Data

Example’s

1.Describe the shape of the graphed data.Do you notice any gaps in the data?

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1.Does the data set contain any outliers?

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1.What Value would be a good representation of variation of this data set?

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What value would be a good measure for the center of the data set?

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If the student who studied for 95 minutes is removed from the data set, how would it affect the center, shape, and spread of the data?

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Vocabulary7

1.What is an outlier? A. a data value that is much greater or less than the other data values.

2.What does standard deviation measure? A. the spread of a data set.

Graphs don't have to be perfectly symmetric to be described symmetric.

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Whats a Box and Whisker plot?

A Box And Whisker plot is like this.

1.Mark the Ends

2.Mark the Median for 50-90

3.Then You Find the Median for each side

Now whats a box and whisker plot used for?

Box and whisker plots are very effective and easy to read. They summarize data from multiple sources and display the results in a single graph. Box and whisker plots allow for comparison of data from different categories for easier, more effective decision-making.

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Whats a Histogram?10

A diagram consisting of rectangles whose area is proportional to the frequency of a variable and whose width is equal to the class interval.

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Sales($)

# Days

Why use a histogram?

A frequency distribution shows how often each different value in a set of data occurs. A histogram is the most commonly used graph to show frequency distributions. It looks very much like a bar chart, but there are important. differences between them.

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ANALYZING THE SHAPE OF DATAMADE BY: TEAM 1

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