Warm Up Find the 5# Summary and IQR of the following data sets. 1.{37, 44, 5, 8, 20, 11, 14} 2.{10, 1, 3, 4, 30, 4, 20, 22, 10, 25}

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Presentation transcript:

Warm Up Find the 5# Summary and IQR of the following data sets. 1.{37, 44, 5, 8, 20, 11, 14} 2.{10, 1, 3, 4, 30, 4, 20, 22, 10, 25}

EQ: What is a Box Plot? Agenda: Notes on Box Plots Group Work In-Class NBA activity Homework assignment

Box Plots A box plot is a graphical display of the 5# Summary. Box plots are good at summarizing large amounts of data. A box plot is sometimes referred to as a Box-And-Whisker Plot.

Box Plots A box plot displays the range and distribution of the 5# summary’s data along a number line. This number line MUST be an interval scale. This means that the numbers on the scale are uniform.

Box Plot Scales For Instance,

How to draw a box plot A box plot is drawn from a 5# Summary. Begin by finding the 5# Summary and IQR of the following data set

How to draw a box plot Then draw a scale to represent the data found. Range: ________

How to draw a box plot Draw short, vertical lines above Q 1, M, and Q 3. Form the “box.”

How to draw a box plot Put a dot above the lowest and highest data point. Draw the “whiskers” from these points to the box.

Example #2 Find the 5# Summary, the IQR and draw a boxplot of the following data set

Steps Find 5# and IQR Determine and Draw Scale Vertical Lines above Q 1, M, and Q 3 Draw Box Mathematically Identify any Outliers!!!

How to Find Outliers Any data point that is more than 1.5 times the IQR above Q 3, or below Q 1 is considered an outlier. On the scale put a single dot above any outlier.

Summary Find 5# and IQR Determine and Draw Scale Vertical Lines above Q 1, M, and Q 3 Draw Box Determine and Mark Outliers Draw Whiskers

Describing a Box Plot The distance between the points in the box plot tells you about the distribution of the data in the quartiles. A shorter distance means: A longer distance means:

Box Plots of the Warm Up Go back to your Warm Up. Find the 5#, IQR, Determine outliers, and draw a Box Plot. Describe the distribution of data points in the quartiles.

Warm Up #

Warm Up #

Ticket Out The Door 1.Get out a clean sheet of lined paper. 2.Put your name at the top. 3.Flip over your data slip. 4. Answer every question fully. 5.I will be grading these.

Homework Worksheet #9 Box Plots Due Monday!