Changeset 20485 in project


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Timestamp:
09/24/10 13:30:07 (10 years ago)
Author:
svnwiki
Message:

Anonymous wiki edit for IP [86.129.203.107]: some documentation

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1 edited

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  • wiki/eggref/4/statistics

    r20481 r20485  
    2323*    random-normal
    2424
    25 ; (random-pick items) : given a list of items, returns a random item.
    26 ; (random-sample n items) : given a number of items to select and a list of items to select from, returns a random sample without replacement of size n.
    27 ; (sign n) : given a number n, returns 0, 1 or -1 according to if n is zero, positive or negative.
    28 ; (square n) : given a number n, returns the square of n.
     25; (random-pick items) : given a list of {{items}}, returns a random item.
     26; (random-sample n items) : given a number of items to select, {{n}}, and a list of items to select from, {{items}}, returns a random sample without replacement of size {{n}}.
     27; (sign n) : given a number {{n}}, returns 0, 1 or -1 according to if {{n}} is zero, positive or negative.
     28; (square n) : given a number {{n}}, returns the square of {{n}}.
    2929
    3030=== Descriptive statistics
    3131
    32 *    mean
    33 *    median
    34 *    mode
    35 *    geometric-mean
    36 *    range
    37 *    percentile
    38 *    variance
    39 *    standard-deviation
    40 *    coefficient-of-variation
    41 *    standard-error-of-the-mean
    42 *    mean-sd-n
     32; (mean items) : given a list of numbers, {{items}}, returns the arithmetic mean of the items (the sum of the numbers divided by the number of numbers).
     33; (median items) : given a list of numbers, {{items}}, returns the value which separates the upper and lower halves of the list of numbers.
     34; (mode items) :
     35; (geometric-mean items) : given a list of numbers, {{items}}, returns the geometric mean of the items (the result of multiplying the items together and then taking the nth root, where n is the number of items).
     36; (range ) :
     37; (percentile items n) :
     38; (variance items) :
     39; (standard-deviation items) :
     40; (coefficient-of-variation items) :
     41; (standard-error-of-the-mean ) :
     42; (mean-sd-n items) :
    4343
    4444=== Distributional functions
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