Commons Math example source code file (Lew.txt)

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data, data, description, difficulty, lew, lew, model, nist, response, response, stat, summary, values, values

The Commons Math Lew.txt source code

#####################################################################
# Dataset Name:  Lew (Beam Deflection Data)
#
# Description:   This is an observed/"real world" data set
#               consisting of 200 deflections of a steel-concrete
#               beam while subjected to periodic pressure.
#               The experimenter was H. S. Lew of the
#               Center for Building Technology at NIST.
#               We here use this data to test accuracy
#               in summary statistics calculations.
#
# Stat Category: Univariate: Summary Statistics
#
# Reference:     http://www.itl.nist.gov/div898/strd/univ/lew.html
#
# Data:         "Real World"
#               1    Response          : y = beam deflection
#               0    Predictors
#               200  Observations
#
# Model:        Lower Level of Difficulty
#               2    Parameters        : mu, sigma
#               1    Response Variable : y
#               0    Predictor Variables
#               y    = mu + e
#####################################################################

#####################################################################
#
# Certified Values
#
#####################################################################
n                          =  200
mean                       = -177.435000000000
standardDeviation          =  277.332168044316
autocorrelationCoefficient = -0.307304800605679

#####################################################################
#
# R Generated Values
#
#####################################################################
variance =  76913.13143
max      =  300
min      = -579
sum      = -35487

#####################################################################
#
# Data
#
#####################################################################
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      96