Ungrouped data-descriptive analysis

# Ungrouped data-descriptive analysis - Population Parameter...

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Ungrouped Data Measures of Central Tendency (Location) Population Parameter Sample Statistic 1. Mean = Average = Expected value = μ = N X 2. Population mode = observation with the highest frequency 3. Population median: a) if the number of observations is odd, then the median is the middle observation, when the observations are put in an array. b) if the number of observations is even, then the median is the average of the two middle observations, when the observations are put in an array. Sample mean = X = n X Sample mode = observation with the highest frequency Sample median: the same way

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Ungrouped Data Measures of Dispersion

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Unformatted text preview: Population Parameter Sample Statistic 1. Range = Highest observation – Lowest observation = H – L 2. Deviation = D = ( 29 μ-X 3. Mean absolute deviation = N X ∑-4. Variance = σ 2 = ( 29 N N X N X 2 2 2-=-∑ ∑ 5. Standard deviation = σ = ( 29 N X ∑-= 2 2 = N N X 2 2-∑ Range = Highest observation – Lowest observation = H - L Deviation = D = ( X- X ) Mean absolute deviation = n X X ∑-Variance = S 2 = ( 29 1 1 2 2 2--=--∑ ∑ n X n X n X X Standard deviation = S = 2 S ( 29 1 2--= ∑ n X X = 1 2 2--∑ n X n X...
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Ungrouped data-descriptive analysis - Population Parameter...

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