📊
Middle SchoolStatistics
Statistics: Mean, Median & Mode
Analysing and summarising data
Learn to find averages and understand what they tell us about data sets.
✓ Mean = sum of values ÷ number of values✓ Median = middle value (arrange data firs...✓ Mode = most frequent value
→
→
→
📖 Understanding Statistics: Mean, Median & Mode
Statistics involves collecting, organising and analysing data. Measures of central tendency give us a 'typical' value for a data set.
Mean (average): Add all values and divide by how many there are. The mean is sensitive to extreme values (outliers).
Median: The middle value when data is arranged in order. If there are two middle values, the median is their average. The median is not affected by extreme values.
Mode: The value that appears most often. A data set can have no mode, one mode, or multiple modes. Range = highest value − lowest value (measures spread).
🔑 Key Points to Remember
- ✓Mean = sum of values ÷ number of values
- ✓Median = middle value (arrange data first!)
- ✓Mode = most frequent value
- ✓Range = maximum − minimum
- ✓Median is better for skewed data
#statistics#mean#median#mode#range#middle school
Ready to see worked examples?