Question 1: Create a stem and leaf diagram for the following data: 12, 15, 14, 13, 16, 12, 15, 14.

Answer: See working

Question 2: Write the key for a stem and leaf diagram where stems represent tens and leaves represent units.

Answer: Example: 1 | 5 = 15

Question 3: Given a stem and leaf diagram with stem '2' and leaves '1, 3, 8', what are the data values?

Answer: 21, 23, 28

Question 4: Construct a stem and leaf diagram for data: 23, 25, 27, 22, 24, 26.

Answer: See working

Question 1: A teacher records test scores (out of 100) for a class. The scores are 45, 55, 60, 70, 85, 90. Construct a stem and leaf diagram with an appropriate key and explain your choice of key.

Answer: See explanation

Question 2: If the key is 'X | Y' where X is the tens digit and Y the units digit, what would be the key for a data value of 37?

Answer: 3 | 7

Question 3: Explain why choosing a clear and consistent key is important when creating stem and leaf diagrams.

Answer: To ensure data is correctly interpreted and the diagram accurately represents the data.

Question 4: Given the data set: 41, 43, 44, 45, 47, what is the stem and leaf diagram with key 'X | Y'?

Answer: See working

Question 5: Identify the mistake in this stem and leaf diagram where the key is 'T | U' and the data is 12, 15, 18 but the key is written as '1 | 8' for 18.

Answer: The key should be '1 | 8' for 18, which is correct; the mistake is in the question's assumption. Students should check the key matches the data.

Question 1: Create a stem and leaf diagram for the data: 58, 61, 63, 65, 68, 70, 72, 75, 78, 80. Choose an appropriate key and justify your choice.

Answer: See explanation

Question 2: Construct a stem and leaf diagram for data: 91, 93, 97, 99, 100. Use a key that clearly indicates the data values.

Answer: See working