L1.30 Understand probability on a scale from 0 (impossible) to 1 (certain) and use probabilities to compare the likelihood of events

Useful PPT for introducing or revising probability. Warm up questions with built in answers followed by several sets of tasks - one based on another Skillsworkshop sheet (Independent Events - see link under "See also"). Covers  likelihood line, calculating probability (including simplifying fractions) and probability of events using a number line.

Level
L1
L2
Maths
L1.30 Understand probability on a scale from 0 (impossible) to 1 (certain) and use probabilities to compare the likelihood of events
L1.31 Use equally likely outcomes to find the probabilities of simple events and express them as fractions
FM L2.27 Express probabilities as fractions, decimals and percentages

This is a project based on Benford's law. I had this idea after watching the Numberphile series on YouTube. This is a project based activity that involves many skills including working with large numbers, using percentages, representing data and probability.

The investigation is introduced to learners using the PPT (and optional YouTube links). Learners then split into four groups - each is given a random set of  share prices [see Excel file].  Each group investigates the occurrence of numbers starting with each digit from 1 to 9.

Editor's note

Level
L1
L2
Maths
FM Complex multi-step problem(s)
FM L1.1 Read, write, order and compare large numbers (up to one million)
FM L1.14 Calculate percentages of quantities, including simple percentage increases and decreases by 5% and multiples thereof
L1.15 Estimate answers to calculations using fractions and decimals
L1.27 Represent discrete data in tables, diagrams and charts including pie charts, bar charts and line graphs
L1.28 Group discrete data and represent grouped data graphically
L1.30 Understand probability on a scale from 0 (impossible) to 1 (certain) and use probabilities to compare the likelihood of events
L1.31 Use equally likely outcomes to find the probabilities of simple events and express them as fractions
Context
Business & Money management