Class: Rupee::Statistics

Inherits:
Object
  • Object
show all
Defined in:
ext/rupee/statistics.c

Class Method Summary collapse

Class Method Details

.bnd(x, y, rho) ⇒ Object

Returns the bivariate normal distribution function



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# File 'ext/rupee/statistics.c', line 203

static VALUE
rupee_bnd(self, _x, _y, _rho)
VALUE self, _x, _y, _rho;

.correlation(xvalues, yvalues) ⇒ Object

Returns the correlation of the supplied x- and y-values.



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# File 'ext/rupee/statistics.c', line 243

static VALUE
rupee_corr(self, _xvals, _yvals)
VALUE self, _xvals, _yvals;

.covariance(xvalues, yvalues) ⇒ Object

Returns the covariance of the supplied x- and y-values.



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# File 'ext/rupee/statistics.c', line 260

static VALUE
rupee_cov(self, _xvals, _yvals)
VALUE self, _xvals, _yvals;

.cnd(z) ⇒ Object

Returns the standard normal cumulative distribution (has a mean of zero and a standard deviation of one).



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# File 'ext/rupee/statistics.c', line 221

static VALUE
rupee_cnd(self, _z)
VALUE self, _z;

.cndev(U) ⇒ Object

Returns the inverse cumulative normal distribution function



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# File 'ext/rupee/statistics.c', line 232

static VALUE
rupee_cndev(self, _U)
VALUE self, _U;

.mean(values) ⇒ Object

Finds the mean of the specified values.



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# File 'ext/rupee/statistics.c', line 277

static VALUE
rupee_mean(self, _values)
VALUE self, _values;

.cnd(z) ⇒ Object

Returns the standard normal cumulative distribution (has a mean of zero and a standard deviation of one).



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# File 'ext/rupee/statistics.c', line 221

static VALUE
rupee_cnd(self, _z)
VALUE self, _z;

.pdf(z) ⇒ Object

Returns the probability density function



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# File 'ext/rupee/statistics.c', line 304

static VALUE
rupee_pdf(self, _z)
VALUE self, _z;

.standard_deviation(values) ⇒ Object

Finds the standard deviation of the specified values.



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# File 'ext/rupee/statistics.c', line 315

static VALUE
rupee_std(self, _values)
VALUE self, _values;

.sum(values) ⇒ Object

Finds the sum of the specified values.



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# File 'ext/rupee/statistics.c', line 331

static VALUE
rupee_sum(self, _values)
VALUE self, _values;

.variance(values) ⇒ Object

Finds the variance of the specified values.



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# File 'ext/rupee/statistics.c', line 347

static VALUE
rupee_var(self, _values)
VALUE self, _values;