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14 Cards in this Set

  • Front
  • Back
equation for cv
sd/mean
equation for sd
sq root of variance
variance: sum (mean-x1)^2 then divide by n-1
Se
sd/sq root of n
if comparing two populations (ones with dz ones without) what test type
x2
if have 2x2 table but one or more cells have fewer than 5 cts, what use
fisher exact if gaussian
mann-whitney if nonparametric
if comparing two distributions (such as determining cutoff values) use what test
student's t - one tailed or two tailed
if comparing performance of two analyzers (i.e. two data sets) use
paired t or correlations
def of analytical accuracy
difference (bias) btwn true result and analytical result and assurance that this does not exceed acceptable limits
calcu of bias
bias = absolute value of true-analytical result is less than or equal to defined limit
value of f test
to see if one analyzer is more precise than another
what is a bland altman plot
difference between two data sets with Y-bias; x-reference method
what is proportional bias
fixed % bias
what is constant bias
fixed amt of bias
what are the axes of a roc curve
Y= sensitivity
X=1-specificity