Master this deck with 22 terms through effective study methods.
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Nominal, ordinal, interval, and ratio.
Nominal data lacks order, while ordinal data has a meaningful sequence.
Categories that can be ranked or ordered.
It has equal intervals but no true zero point.
Ratio data includes a true zero, allowing for meaningful ratios.
It ensures appropriate analyses and valid conclusions.
It leads to incorrect statistics and misleading conclusions.
Categories can be ranked but intervals are not equal.
Interval data has no true zero, while ratio data does.
The arithmetic average of a dataset.
With ordinal, interval, or ratio data, especially with outliers.
The most frequently occurring value in a dataset.
Average of squared deviations from the mean.
Average distance of data points from the mean.
Range of the middle 50% of data, more robust to outliers.
Minimum, Q1, median, Q3, maximum, and outliers.
To see distribution shape, identify outliers, and compare groups.
Show frequency distribution and shape of the data.
Combine distribution shape with summary statistics.
With symmetric distributions where all data is used.
Mean is pulled towards the tail, median is more representative.
Distance from the minimum to the maximum value.