GCSE Secondary Maths Age 13-17 - Probability & Statistics: Stem and Leaf Diagram - Explained

The video tutorial explains how to tackle a straightforward paper, focusing on constructing an ordered stem and leaf diagram and calculating percentages. It emphasizes the importance of ordering data and including a key in the diagram. The tutorial also covers converting fractions to percentages, specifically calculating the percentage of men taller than 184 cm. The video concludes with a recap of the key points and common mistakes to avoid.

What is the first step in constructing a stem and leaf diagram?

• Highlight the starting points for the stems

• Order the data points

• Identify the key for the diagram

• Calculate the mean of the data

Why is it important to order the data in a stem and leaf diagram?

• To make the diagram look neat

• To ensure accurate representation of data

• To increase the number of marks

• To simplify the calculation of averages

What does the key in a stem and leaf diagram represent?

• The range of the data

• The total number of data points

• The meaning of the numbers in the diagram

• The average of the data

How do you convert a fraction to a percentage?

• Add 100 to the fraction

• Multiply the fraction by 10

• Multiply the fraction by 100

• Divide the fraction by 100

What common mistake did students make in the percentage calculation?

• Forgetting to multiply by 100

• Using a calculator for the calculation

• Calculating the percentage of people less than 184 cm

• Using the wrong denominator