Variation & Standard Deviation

Last updated Jun 21, 2023 Edit

• Biology
• Classification

• Standard deviation is a measure of how spread out the data is.

• The greater the standard deviation, the greater the spread of data.

• A normal distribution is usually a bell-shaped curve.

• Mean, mode and median are equal
• bell shaped
• Symmetrical (50% higher than mean, 50% lower)
• Most values are close to the mean
• Few individuals at extremes

Classification