Statistical Measures and Data Representation

This video tutorial explains how to interpret and analyze a stem and leaf diagram. It covers counting the number of students, identifying the longest and shortest times, determining how many students took longer than 50 seconds, and calculating the range, mode, and median from the data presented in the diagram.

What is the main topic of the video?

• Pie Charts

• Bar Graphs

• Stem and Leaf Diagrams

• Line Graphs

What does the key '3 | 1' represent in the diagram?

• 3.1 seconds

• 13 seconds

• 31 seconds

• 1.3 seconds

How many students completed the puzzle?

• 12

• 11

• 13

• 10

What does each leaf in the diagram represent?

• A teacher

• A pair of students

• A single student

• A group of students

What was the longest time taken by a student to complete the puzzle?

• 40 seconds

• 42 seconds

• 68 seconds

• 51 seconds

What was the shortest time taken by a student to complete the puzzle?

• 31 seconds

• 33 seconds

• 37 seconds

• 39 seconds

What is the significance of the number 68 in the diagram?

• It is the shortest time

• It is the mode

• It is the median

• It is the longest time

Which number is used to represent the shortest time in the diagram?

• 33

• 31

• 39

• 37

What is the significance of the number 31 in the diagram?

• It is the shortest time

• It is the mode

• It is the median

• It is the longest time

How many students took more than 50 seconds to complete the puzzle?

• 3

• 2

• 4

• 5