AGRC1023 Lecture Notes - Lecture 5: Standard Score, Standard Deviation, Normal Distribution
Document Summary
Normal curve standard distribution bell curve shape. Positive skew skew to the left, with a long right tail. Negative skew skew to the right, with a long left tail. If q2 = median = mean, then data is normally distributed. In this case, 50% data is above q2 and 50% below q2. Ensure you can identify/draw a box & whisper plot using the five-number summary. Z score o o o o o o o o o. If equal to 0, represents an element equal to mean. If equal to 1, represents element 1 standard deviation greater than the mean. If equal to 2, represents element 2 standard deviations greater than mean. If equal to -2, represents element 2 standard deviations smaller than the mean. Z score can be negative, 0, or positive. Data can be transferred to z-score, which can be used to compare different sets of data on same scale.
