Statistics lesson 3 - Statistics lesson 3 Video 1 Mean Median Mode range and standard deviation offer numerical information about the distribution

# Statistics lesson 3 - Statistics lesson 3 Video 1 Mean...

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Statistics lesson 3: Video 1: Mean, Median, Mode, range and standard deviation: offer numerical information about the distribution of a data set - Mean, median and mode: measures of central tendency - Range and standard deviation: measures of spread 1. Measures of centers Mode: refers to the data value that is most frequently observed (154 appears 3 times) Median: middle of an ordered data set (set an order from smallest to largest and select the middle) Formula: (n+1)/2 (divided by 2) to find out the position of the median (n is the total number of data values) If n is even number, we have 2 middle points, we must take the arithmetic average (toan trung binh) of the two values besides this position Mean: arithmetic average
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