1. Splash Screen

2. Lesson Menu Five-Minute Check (over Lesson 2–3) Main Idea and Vocabulary Example 1:Construct a Stem-and-Leaf Plot Example 2:Analyze Plots

3. Main Idea/Vocabulary stem-and-leaf plot stems leaves key Display and analyze data using a stem-and-leaf plot.

4. Example 1 Construct a Stem-and-Leaf Plot WEATHER Make a stem-and-leaf plot for the data in the table below. Step 1Order the data from least to greatest. 66, 67, 69, 70, 71, 72, 73, 73, 74, 74, 75, 76, 77, 78, 79, 81, 88, 89

5. Example 1 Construct a Stem-and-Leaf Plot Step 2Draw a vertical line and write the tens digits from least to greatest to the left of the line. These digits form the stems. Since the least value is 66 and the greatest value is 89, the stems are 6, 7, and 8. Animation: Construct a Stem-and-Leaf Plot

6. Example 1 Construct a Stem-and-Leaf Plot Step 3Write the ones digits in order to the right of the line with the corresponding stem. The units digits form the leaves. Step 4Include a key that explains the stems and leaves.

7. Example 1 Construct a Stem-and-Leaf Plot Answer:

8. 1.A 2.B 3.C 4.D Example 1 DRIVING Make a stem-and- leaf plot for the data in the table. A.B. C.D.

9. Example 2 FOOTBALL The following stem-and-leaf plot shows the total points scored in 39 recent Super Bowls. Write a few sentences analyzing the data. Analyze Plots

10. Example 2 Analyze Plots Sample answer:The lowest point total is 21, and the highest is 75. Most of the combined scores are in the 30s, 40s, and 50s; higher and lower point totals are more unusual.

11. 1.A 2.B 3.C 4.D Example 2 A.The lowest nightly rate is $68, and the highest is $91. Most of the rates are in the $80s and $90s. B.The lowest nightly rate is $62, and the highest is $95. Most of the rates are in the $70s and $80s. C.The most common nightly rate is $89. Most of the rates are less than $80. D.The most common nightly rate is $75. Most of the rates are more than $90. HOTEL RATES The following stem- and-leaf plot shows nightly hotel rates for a sample of hotels in a large metropolitan area. Write a few sentences that analyze the data.

12. End of the Lesson

13. Resources Five-Minute Check (over Lesson 2–3) Image Bank Math Tools Construct a Stem-and-Leaf Plot Making Predictions from Graphs

14. 1.A 2.B 3.C Five Minute Check 1 (over Lesson 2-3) A.equal B.higher C.lower Based on the trend in the graph, will the enrollment in 2006 be higher or lower than in 2005?

15. 1.A 2.B 3.C 4.D Five Minute Check 2 (over Lesson 2-3) A.120; 130 B.125; 135 C.130; 140 D.130; 145 Based on the trend in the graph, predict the enrollment in 2006 and in 2007.

16. 1.A 2.B 3.C 4.D Five Minute Check 3 (over Lesson 2-3) A.50 B.45 C.40 D.30 Based on the graph, about how many students were enrolled in 2000?

17. 1.A 2.B 3.C 4.D Five Minute Check 4 (over Lesson 2-3) A.9 years B.6 years C.5 years D.4 years Based on the trend in the graph, predict how many years after 2005 it will take to reach an enrollment of 200 students.

18. 1.A 2.B 3.C 4.D Five Minute Check 5 (over Lesson 2-3) A.60 B.45 C.40 D.35 Based on the trend in the graph, predict how many flowers will be on the bush in week 7.

19. End of Custom Shows