Means Output Comparing Pairs of Fields

When comparing separate fields, the output table includes a row for each selected field pair.

• Field One/Two. Displays the name of the first and second field in each pair. In the advanced view, the standard deviation, standard error, and count are also displayed.
• Mean One/Two. Displays the mean for each field, respectively.
• Correlation. Measures the strength of relationship between two continuous (numeric range) fields. Values close to +1.0 indicate a strong positive association, and values close to –1.0 indicate a strong negative association. See the topic Correlation Settings for more information.
• Mean Difference. Displays the difference between the two field means.
• Importance. Displays the importance value and label. See the topic Means Node Options for more information.

Advanced Output

Advanced output adds the following columns:

95% Confidence Interval. Lower and upper boundaries of the range within which the true mean is likely to fall in 95% of all possible samples of this size from this population.

T-Test. The t statistic is obtained by dividing the mean difference by its standard error. The greater the absolute value of this statistic, the greater the probability that the means are not the same.

df. Displays the degrees of freedom for the statistic.