StemandLeaf Plot How many people Answer 10 people

Stem-and-Leaf Plot • How many people? • Answer: 10 people • Data? • Answer: their ages are 32, 1, 45, 37, 8, 9, 55, 81, 34, and 51.

Stem-and-Leaf Plot n How many students are in the class? n n A. ) 14 B. ) 15 C. ) 22 D. ) 20 n Answer: A n n

Stem-and-Leaf Plot • Which values appear most often? • • A. ) 27, 32, 48 B. ) 27, 32 C. ) 48 D. ) 22, 32, 40 • Answer: A

Stem-and-Leaf Plot • What is the largest number in the data? • A. ) 46 • B. ) 48 • C. ) 39 • D. ) 22 • Answer: B

Stem-and-Leaf Plot § What is the smallest number in the data? § A. ) 48 § B. ) 32 § C. ) 27 § D. ) 22 § Answer: D

Stem-and-Leaf Plot o Example: ? ? ? See the next slide o A plot flew a jet on 20 test flights. The average speed in miles per hour of each test flight is shown at the right. o Complete the stem- and-leaf plot at the left to show this data.

Stem-and-Leaf Plot “Jet Speed” 64 I 5 7 8 65 I 2 3 7 7 66 I 0 3 4 4 67 I 1 5 6 7 68 I 0 2 4 64 I 5 means 645 mph • A pilot flew a jet on 20 test flights. The average speed in miles per hour of each test flight is shown at the right. • Complete the stemand-leaf plot at the left to show this data.

Stem-and-Leaf Plot “ ” ? ? I ? means ? ? • A police officer clocked the times of 15 drivers who passes a certain point. The speeds (in mph) were 58, 69, 70, 72, 59, 60, 62, 75, 64, 68, 66, 58, 69, 70, and 66. • Use the data to create a stem-and-leaf point in space at the left. (see the next slide, answers)

Stem-and-Leaf Plot “ Drivers’ Speeds” 5 I 889 6 I 02466899 7 I 0025 5 I 8 means 58 mph • A police officer clocked the times of 15 drivers who passes a certain point. The speeds (in mph) were 58, 69, 70, 72, 59, 60, 62, 75, 64, 68, 66, 58, 69, 70, and 66. • Use the data to create a stem-and-leaf point in space at the left.

Back-to-Back Stem-n-Leaf

Back-to-Back Stem-n-Leaf

Stem-and-Leaf Plot and Frequency Table