TODAY IN ALGEBRA…  Warm up: Stem-and-Leaf plot, Mean, Median, Mode and Range  Review EOC Practice (from Friday)  Learning Target: 13.6 You will compare measures of central tendency and dispersion  AT – Test corrections

Stem Leaves

STEP 1: Write values in increasing order. STEP 2: Find the median. STEP 3: Find the lower quartile and the upper quartile. Lower halfUpper half Median Lower quartile Upper quartile

STEP 4: Graph the value on a number line. Lower halfUpper half Median Lower quartileUpper quartile

STEP 1: Write values in increasing order. STEP 2: Find the median. STEP 3: Find the lower quartile and the upper quartile. Lower half Upper half Median Lower quartileUpper quartile

STEP 1: Write values in increasing order. STEP 2: Find the median. STEP 3: Find the lower quartile and the upper quartile. Lower half Upper half Median Lower quartileUpper quartile

STEP 4: Graph the value on a number line. Lower half Upper half Median Lower quartileUpper quartile

13.8 BOX-AND-WHISKER PLOT CHECKPOINT: Complete problems Pg.889: 3-6 Make a box-and-whisker plot of the data.

13.8 BOX-AND-WHISKER PLOT CHECKPOINT: Complete problems Pg.889: 3-6 Make a box-and-whisker plot of the data.

13.8 BOX-AND-WHISKER PLOT CHECKPOINT: Complete problems Pg.889: 3-6 Make a box-and-whisker plot of the data.

13.8 BOX-AND-WHISKER PLOT INTERPRETING BOX-AND-WHISKER PLOTS

13.8 BOX-AND-WHISKER PLOT EXAMPLE: The box-and-whisker plots below show the normal precipitation(in inches) each month in Dallas and Houston, TX 1. For how many months is Houston’s precipitation less than 3.5 inches?

13.8 BOX-AND-WHISKER PLOT EXAMPLE: The box-and-whisker plots below show the normal precipitation(in inches) each month in Dallas and Houston, TX 1. Compare the precipitation in Dallas and in Houston. Which city typically has the most rain? Houston typically has more rain since most of the data lies further to the right.

13.8 BOX-AND-WHISKER PLOT CHECKPOINT: Complete problems Pg.890: 8-10 In Exercises 8-10 use the box-and-whisker plot.