Data Handling - Mean, Median, Mode

Data Collection: • Surveys, observations, measurements • Tally marks for counting

Data Representation: • Pictographs: Using pictures/symbols • Bar graphs: Using bars • Tables: Organized data

Measures of Central Tendency: • Mean: Sum of values ÷ Number of values • Median: Middle value when arranged in order • Mode: Most frequently occurring value

Example: Data: 3, 5, 5, 7, 9 • Mean: (3+5+5+7+9)/5 = 29/5 = 5.8 • Median: 5 (middle value) • Mode: 5 (appears most)