Wilcoxon Signed Rank Test VI

Owning Palette: Hypothesis Testing VIs

Requires: Full Development System

Tests hypotheses about the mean of populations whose distributions are continuous and symmetric but not necessarily normal. You must manually select the polymorphic instance to use.

As in all hypothesis tests, the hypotheses are statements about the population, not about the sample set.

Use the pull-down menu to select an instance of this VI.

Select an instance Wilcoxon Signed-Rank Test (mean)Wilcoxon Signed-Rank Test (paired samples)

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Wilcoxon Signed-Rank Test (mean)

	sample set specifies the randomly sampled data from the population of interest.
	mean specifies the hypothesized mean value of the population. The null hypothesis is that the population mean is equal to mean. The mean of a symmetrical distribution is a value of a random variable such that the probability that an observed value of the variable is less than or equal to the mean and the probability that the observed value is greater than or equal to the mean are both 50%.
	significance level specifies the probability that the hypothesis test conclusion is wrong based on the sample set and the hypothesized mean.
	alternative hypothesis specifies the hypothesis to accept if LabVIEW rejects the null hypothesis that the population mean is equal to mean. –1 mean(pop) < mean—The population mean is less than mean. 0 mean(pop) != mean—The population mean is not equal to mean. 1 mean(pop) > mean—The population mean is greater than mean.
	reject null hypothesis indicates whether to reject the null hypothesis, with significance level being the probability of reaching the wrong conclusion. If p value is less than or equal to significance level, reject null hypothesis returns TRUE. Reject the null hypothesis and accept the alternative hypothesis. If p value is greater than significance level, reject null hypothesis returns FALSE. Accept the null hypothesis and reject the alternative hypothesis.
	p value returns the probability that you incorrectly rejected the null hypothesis.
	error returns any error or warning from the VI. You can wire error to the Error Cluster From Error Code VI to convert the error code or warning into an error cluster.

Wilcoxon Signed-Rank Test (paired samples)

Tests hypotheses about the mean of two populations whose distributions are continuous and differ only in their means.

	sample set x contains the sampled data from the first variable x.
	sample set y contains the sampled data from the second variable y.
	significance level specifies the probability that the hypothesis test conclusion is wrong based on the sample set x and sample set y.
	alternative hypothesis specifies the hypothesis to accept if LabVIEW rejects the null hypothesis that the two variable populations have a common mean. –1 mean(x) < mean(y)–The mean of the first population is less than the mean of the second population. 0 mean(x) != mean(y)–The mean of the first population is not equal to the mean of the second population. 1 mean(x) > mean(y)–The mean of the first population is greater than the mean of the second population.
	reject null hypothesis indicates whether to reject the null hypothesis, with significance level being the probability of reaching the wrong conclusion. If p value is less than or equal to significance level, reject null hypothesis returns TRUE. Reject the null hypothesis and accept the alternative hypothesis. If p value is greater than significance level, reject null hypothesis returns FALSE. Accept the null hypothesis and reject the alternative hypothesis.
	p value returns the probability that you incorrectly rejected the null hypothesis.
	error returns any error or warning from the VI. You can wire error to the Error Cluster From Error Code VI to convert the error code or warning into an error cluster.