13 terms in 1
1.1: Mean
The arithmetic average of a set of values, calculated by summing all values and dividing by the number of values. Denote
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1.1: Mean
The middle value of a dataset when arranged in ascending or descending order. For an even number of values, it is the av
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1.1: Mean
The value that occurs with the highest frequency in a dataset. For grouped data, the modal class is the class with the h
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1.1: Mean
The simplest measure of spread, calculated as the difference between the maximum and minimum values: Range = Max - Min.
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1.1: Mean
A measure of spread calculated as IQR = Q₃ - Q₁, where Q₃ is the upper quartile and Q₁ is the lower quartile. It represe
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1.1: Mean
A measure of dispersion representing the average distance of data values from the mean. Calculated as s = √(Σ(x - x̄)²/(
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1.1: Mean
The average of the squared deviations from the mean, calculated as s² = Σ(x - x̄)²/(n-1) for a sample or σ² = Σ(x - μ)²/
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1.2: Histogram
A graphical representation of grouped continuous data using rectangular bars where the area of each bar is proportional
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1.2: Histogram
A graphical display consisting of a rectangular box showing Q₁, median, and Q₃, with lines (whiskers) extending to show
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1.2: Histogram
A running total of frequencies, where the cumulative frequency for a class is the sum of the frequency of that class and
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1.2: Histogram
A data display technique where values are split into a stem (all digits except the last) and a leaf (the last digit), ar
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1.3: Skewness
A measure of the asymmetry of a distribution. Calculated using the formula: skewness = (mean - mode) / standard deviatio
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1.3: Skewness
Values that are significantly different from the rest of the dataset. Formally, a value x is an outlier if x < Q₁ - 1.5×
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