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Subject 4. Measures of Center Tendency value that stands in the middle of the data set, and divides it into two equal halves, with an equal number of data values in each half.
To determine the median, arrange the data from highest to lowest (or lowest to highest) and <span>find the middle observation. If there are an odd number of observations in the data set, the median is the middle observation (n + 1)/2 of the data set. If the number of observations is even, there is no single mid
last interval [days]
repetition number in this series
scheduled repetition interval
last repetition or drill
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