Lesson 5 4 Choosing an Appropriate Graph Arizona

Lesson 5. 4 – Choosing an Appropriate Graph Arizona State Standard: … Compare & contrast the effectiveness of different representations of data S 2 C 1 PO 4

Guidelines for selecting the correct graph to display data. Use a bar graph when the data fall into distinct categories and you want to compare totals. n Use a line graph when the categories have a numerical order, such as a sequence of years. n Use a pictograph instead of a bar graph when you want a high visual appeal n REFER TO HANDOUT

Try it! n n You take a survey to find out how much walking people do while at work. The results are shown below. What is the best graph to display this data? Occupation Distance walked per day Mail Carrier 4. 4 mi Doctor 3. 5 mi Police Officer Retail 6. 8 mi salesperson 3. 4 mi

Did you pick bar graph? Distance Walked Per Day

Example #2 – What is the best graph to represent the following data? Clothing Color Black Blue Gray Red Brown # of Women 727 551 223 222 102 # of Men 702 473 649 78 198

Stacked Bar Graph? ? ?

Line Graph? ? ?

Scatter Plot? ? ?

Bar Graph? ? ?

Let’s Practice! n Page 222 n #1 -4

1. How many more mi. per day do police officers walk than mail carriers? ANS: 2. 4

2. In which occupation do people walk half the distance per day that police officers do? ANS: retail salesperson

3. How many men than women prefer to wear gray? ANS: 426

4. Which is the least popular suit color for women? ANS: Brownwomen Red - men

HOMEWORK n Page 222 n # 5 – 13 ALL