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Errors of approximation
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accuracy answer approximately assess assumed binomial distribution Biometrika calculations computational error constant correct corresponding decimal place determine difference discrepancy equation erratic error error-free estimate the standard example experimental errors experimental points factors fitted line formula given in Table gives gradient graph guarding figures Hence interpolation interval large number less limits linear magnitude maximum error measured value ment negligible normal distribution number of points number of values obtained occur outlier percentage points Poisson distribution polynomial precision probability probability distribution quantity r.m.s. error random errors random variable range estimator range method rectangular distribution relative error repeated measurements result rounding sample sample mean scale shown in Fig significant figures simple slide rule standard deviation standard error statistical straight line sum-of-squares estimator systematic error Table A.4 three-group method tion trapezoidal method true value uncertainty usually values of dy/dx variable variance variation weighted mean zero