Lack of Fit Report Note: The Lack of Fit report appears only if there are multiple rows that have the same x value. The test relies on the ability to estimate the variance of the response using an estimate that is independent of the model. The confidence interval for the adjusted power is based on the confidence interval for the noncentrality estimate. Prob > F Lists the p-value for the Lack of Fit test.

Adjusted Power and Confidence Interval Retrospective power calculations use estimates of the standard error and the test parameters in estimating the F distribution’s noncentrality parameter. To change the level of confidence, select a new alpha level from the Set α Level command from the platform red triangle menu. In the Emphasis list, select Minimal Report. 6. Parameter Lists the model terms.

Please try the request again. Used when exact values can not be obtained. ‒ Sidak: Used when both Nelson and Nelson-Hsu fail. The model is considered to be statistically significant if it can account for a large amount of variability in the response. The indicator variable for a given level assigns the values 1 to that level, –1 to the last level, and 0 to the remaining levels.

RSquare Adj Adjusts the Rsquare value to make it more comparable over models with different numbers of parameters by using the degrees of freedom in its computation. If this test is non-significant, the model might be correct but not fully reaching the convergence criteria. From the red triangle next to Response Domestic $, select Estimates > Multiple Comparisons. 7. The Connecting Letters Report A Connecting Letters Report appears by default beneath the Crosstab matrix.

See Sequential Tests. Select Analyze > Fit Model. 3. The Means for Oneway Anova report shows the following information: Description of the Means for Oneway Anova Report Level Lists the levels of the X variable. Correlation of Estimates Report The report (Correlation of Estimates Report) shows high negative correlations between the parameter estimates for the Intercept and Median School Years (–0.9818).

For an example, see Example of Predicting a Single X Value with Multiple Model Effects. See Comparisons with Overall Average for Ratings for a report based on the Movies.jmp sample data table. That factor is represented by n-1 indicator variables, one for each of n-1 levels. Prob > F Gives the p-value for the effect test.

They are computed by fitting models in steps following the specified entry order of effects. An RSquare near 0 indicates that the model is not a much better predictor of the response than is the response mean. Generated Sat, 15 Oct 2016 04:41:52 GMT by s_wx1094 (squid/3.5.20) The contents of cells containing significant differences are highlighted in red.

RSquare (U) Shows the R2, which is the ratio of the Difference to the Reduced negative log-likelihood values. Show Prediction Expression The Show Prediction Expression option shows the equation used to predict the response. From the red triangle next to Response weight, select Estimates > Joint Factor Tests. Note that, for Tukey HSD, the quantile is , where q is the appropriate percentage point of the studentized range statistic.

In such cases, DF might be less than Nparm, indicating that at least one parameter associated with the effect is not testable. The VIF for the ith term, xi, is defined as follows: where Ri 2 is the RSquare, or coefficient of multiple determination, for the regression of xi as a function of Caution: The results provided by the LSV0.05, LSN, and AdjPower0.05 should not be used in prospective power analysis. F Ratio The model mean square divided by the error mean square.

If the hypothesis is true, then this statistic has a Student’s t-distribution. Note: In this section, we will use the term mean to refer to either estimates of least squares means or user-defined estimates. The goal when making multiple comparisons is to determine if group means differ, while controlling the probability of reaching an incorrect conclusion. Correlation of Estimates The Correlation of Estimates command on the Estimates menu computes the correlation matrix for the parameter estimates.

Parameter Estimates The Parameter Estimates report shows the estimates of the model parameters and, for each parameter, gives a t test for the hypothesis that it equals zero. For a given comparison, the report shows the estimated difference, standard error, confidence interval, tratio, degrees of freedom, and p-values for one- and two-sided tests. Enter a single value (From only), two values (From and To), or the start (From), stop (To), and increment (By) for a sequence of values. This example considers only the response for June PM.

The null hypothesis is rejected if the F ratio is large. Remove all parameter estimates whose absolute values exceed 3.75 times the median absolute estimate. 3. Chi-Square Likelihood-ratio Chi-square test for the hypothesis that all regression parameters are zero. AICc Shows or hides the corrected Akaike Information Criterion value (AICc) and the Bayesian Information Criterion value (BIC).

This is the portion of the sample error that cannot be explained or predicted no matter what form of model is used. Delta (δ) The effect size of interest. The confidence interval computation assumes that the variances are equal across observations. Select Sex, Runtime, and RstPulse and then select Add. 4.

Select Help > Sample Data Library and open Reactor.jmp. 2. Detailed Comparisons Gives individual detailed reports for each comparison. The adjusted power deals with a sample estimate, so it and its confidence limits are computed only for the δ estimated in the current study. As shown in Illustration of Indicator Variables for treatment in Cholesterol.jmp, this variable assigns values as follows: • The value 1 is assigned to rows that have treatment = A •

It measures the significance of the regressors as a whole to the fit. Adjustment for Multiple Comparisons: Tukey-Kramer Least Squares Means for effect GROUP Pr > |t| for H0: LSMean(i)=LSMean(j) i/j 1 2 3 1 0.0286 0.9904 2 0.0286 0.0154 3 0.9904 0.0154 The From the red triangle menu, select Fit Line. Description of Report Window Elements Element Reference Mean diamonds are added to the Oneway plot See Display Options and Mean Diamonds and X-Axis Proportional.

Description of the Summary of Fit Report RSquare Estimates the proportion of variation in the response that can be attributed to the model rather than to random error. Mean Square Shows the mean square for the effect, which is the sum of squares for the effect divided by its DF. The Sorted Parameter Estimates report appears (Sorted Parameter Estimates Report for Saturated Model). For main effects, the Least Squares Means Table also includes the sample mean (Least Squares Mean Table).

See Effect Summary Report. That is, it tests the hypothesis H0: 1...g. DF Shows the degrees of freedom for the effect test.