GGR270H1 Lecture Notes - Lecture 3: Central Tendency, Skewness, Square Root
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Most commonly used measure of central tendency. Sum of all values or observations divided by the number of observation. The order of the numbers in the sample, its their value that they hold that matters. = 9. 6 (rounded up) (always round up based on the data you given, like the numbers above) Value occupying the "middle possition" in an ordered set of observations. With the median the value doesnt necessarly matter, its the value that occupies the middle. Order the observations, lowest to highest, and find the middle position. Formula: 0. 5 (n+1) (this gives you the position) Order: 7. 3, 8. 2, 8. 4, 9. 1, 9. 4, 10. 7, 13. 9. 0. 5(7+1) = 4th position in the ordered set. So, add 3rd and 4th and divide by 0. 5. Value that occurs with the highest frequency. Allows you to locate the peak of a relative frequency histogram. Mode is 3 household members (based on the table presented)
