Constructing and Interpreting Graphs Objective – to draw, compare, and analyze bar graphs vs. stem and leaf plots. Pages

Scores for Test 1Scores for Test 2Stem Leaf Turn to page 156 How are these graphs alike? How are they different?

Scores for Test 1Scores for Test 2Stem Leaf They have the same data, BUT Bar graph has the data grouped in tens comparing Test 1 & 2. Stem & Leaf are separated but you can see all the numbers.

Take out your ruler and measure the span of your hand in centimeters. Round to the nearest centimeter. Write down your answer.

Let’s compile our data. Everyone write down this list as we go along. Girls Boys

Now it’s your turn to create a stem and leaf plot using our data. Neatly create two in your notebook, one for the boys and one for the girls. StemLeaf Your ones go in here in order from least to greatest.

Now it’s time to create a bar graph. What do you think our intervals should be? Every 10 centimeters? Every 5 centimeters? Something else? Organize your data, then use the provided paper to create a bar graph. Example: -> ◦Remember  Title  Label Axis  Legend

Page 157 Ages of grandparents of a grade 6 class. Grandmothers’ Ages Grandfathers’ Ages

Grandparents’ Ages StemLeaf

Grandparents’ Ages StemLeaf From which graph can you find the range? What is the range?

Grandparents’ Ages StemLeaf From which graph can you find the range? The stem and leaf plot What is the range? 76-45=31

Practice Page 158 # 1, 2, 3