JMP User Community

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Comparing multiple means using one way ANOVA when variances are unequal

I have 3 data sets and performed One way ANOVA to see if means between group are different. The ANOVA for the P-value is 0.13 and shows there is no significant difference between means, but the four test for equal variance test O'Brein, Brown-Forsyhe Levene and Barrlett have p-value equal to or less than 0.00723. This indicates variances are not equal. The Welch's ANOVA test also has a low p...
lconley20

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Dec 7, 2016 6:22 AM

10507 views | 1 replies
Curve fitting and normalization

I have got a data set which is positively skewed and therefore need to normalize it. I have got a wave form line with age and challenging behaviours present in Individuals with intellectual disabilities. I am totally new to JMP and advanced statistical procedures and this is a big step in requirement of my PhD research. Any step by step guidelines or videos in scale development, curve fitting, nor...
bj

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Dec 6, 2016 8:28 PM

21847 views | 13 replies
Graph Builder Overlay Color

Hi, In Graph Builder, how can I use the Overlay and Color options to change the color and marker for each data group? Changing the marker is useful to help distinguish data when there are many colors, which may be very similar to each other. For example, in the script below, it is useful use Overlay to separate data by age, and use Color to change the color and marker for each point, but if I us...
robot

Discussions |
Dec 6, 2016 12:13 PM

12946 views | 2 replies
Changing Date Format

I'm trying to import data from an excel file where a column contains dates in a format that looks like "Monday, December 05, 2016, 2016 12:20:01 PM EST"I want to plot this data in JMP in chronological order. To do so, I believe I need to get the date into numeric continuous format. Does anyone know how to convert the date over? I've seen a couple date conversion in JMP, but non starting from the f...
kschnarrs

Discussions |
Dec 6, 2016 7:11 AM

31046 views | 9 replies
How to use variable in a dataset script

Hi,
I am using jsl script to analyse data, by generating small dataset which contains only a speciifc type of parameter with several "calculation" based on these parameters ( some information extracted from parameter name and some calculation on parameter
values). My main analysis script adds then several scripts to the dataset to be able to plot scatter plot between variable, run OneWay test, distr...
r23426

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Dec 4, 2016 3:42 PM

9703 views | 2 replies

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Latest Discussions

Create horizontal border to separate y-grouped plots

Hi, I want to create a horizontal border to seperate my y-grouped plots. I have attached a screen shot show with black crosses where I want to create the border.
tobben24

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Dec 1, 2016 11:44 AM

4564 views | 2 replies
Script formatting for Variability Charts

Hello, I am trying to script a series of Variability Charts in a single Window, which I could save to a JRN or pptx later. Each chart is intended to display the values (in Y) of different parameters (e.g. Height, Weight, Length) with different combination of independent X axis {due to this reason, I could not script it as By( :Parameter_Class ) } in a single Variability Chart platform. Probl...
ylee

Discussions |
Nov 30, 2016 5:46 PM

7546 views | 2 replies
Can someone help me with PC settings to improve analysis speed?

Dear friends,I have Intel Xeon Processor E5-1650 v3 (15M Cache, 3.50 GHz, 6cores) with windows 7.My system stop responding sometimes. For instance, I have just 12000 data points each with 95 columns. When I do a fit model with full factorial using just 20input variables, system stops responding. Also when I use multivariate analysis, parallel plots etc with the same data it is extremely slow. But ...
sanqub

Discussions |
Nov 29, 2016 8:48 AM

7977 views | 4 replies
Why there is a constant component in the PCA formula

I have been surprised to see a constant component in the saved formula when performing PCA analysis. For example, saving the 1st 2 Principal Components on the following standardized data set (centered and scaled data), Standardized (Centered + Scaled) DataSLengthSWidthPLengthPWidth0.270.19-0.36-0.44-0.30-1.14-0.36-0.44-0.88-0.61-0.94-0.44-1.16-0.870.22-0.44-0.020.46-0.36-0.441.131.261.381.48-1.16...
ILoveJMP

Discussions |
Nov 28, 2016 1:24 PM

5746 views | 3 replies
Removing values from a column

Hi All, I would like to remove values from a column. Normally, I would use a range check column property to do this, but with this particular column, it is also dependendent on another column's value. Is there an easy way to do this? I tried the code below, but unfortunately it makes the entire column blank except for the first row. I thought this might work because the "." represents missing v...
natalie_

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Nov 25, 2016 1:16 PM

4235 views | 3 replies

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Odds ratios for multiway tables

On twitter earlier today, someone asked if the Cochran-Mantel-Haenszel (CMH) odds ratio (OR) test was available in JMP when the stratification variable is not the X in Fit Y by X. Anytime I need to go from two variables to more than two variables, the first place I look is Fit Model. The beauty of fit model is that not only can I use as many variables as I want, but I can consider interactions bet...
DonMcCormack

Discussions |
Aug 10, 2016 3:35 PM

4868 views | 0 replies
How to find ETA squared effect size for MANOVA?

Hello, Does anyone know how to calculate the eta squared value from a manova analysis in JMP? I know that the E and H matrices tab shows the sum of squares for each parameter, but which values do I use to calculate SStotal and SSeffect? In my model, I have 2 control variables (age and gender) and then a two way factorial. If only one of these variables (in addition to both control variables) is si...
nsalmano_stanfo

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Aug 8, 2016 7:04 AM

3878 views | 0 replies
Is there an easy way to get the FWHM (full width half max) of a curve using JMP?

Dear JMP community,Is there an easy way to get the FWHM (full width half max) of a spectral curve using JMP? Finding the minima and maxima are fairly straightforward, but then calculating the FWHM seems to be much more laborious in JMP, especially if the data is sparse and we would like to interpolate to get more accurate intersections between the peak and the FWHM value. In my case, the peak is o...
mcjorge

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Jul 22, 2016 8:13 AM

5146 views | 0 replies
Co-Kriging with JMP and Matlab

Hi!I was wondering if anyone already tried to work with Co-Kriging, using JMP together with Matlab. As JMP only fits Ordinary Kriging Models (Gaussian Process with Gaussian Correlation Function), I would like to send data (generated with Space Filling JMP Platform) from JMP to Matlab, fit the models there (Matlab), and bring the MODELS back to JMP, to use inside Profile Platform. Do you have any e...
samuelbbaco0

Discussions |
Dec 4, 2015 12:32 PM

3586 views | 0 replies
Interpreting canonical structure and scores in discriminant analysis

I'm trying to interpret the relative contributions of my variables in a discriminant function analysis of chemical data for three groups of rocks. In a stepwise, linear, common covariance discriminant function analysis I'm able to generate non-overlapping 95% confidence ellipses for my three groups with no incorrectly assigned data points using 6 variables. My understanding is that the scoring c...
amzipkin

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Oct 20, 2015 3:25 PM

3567 views | 0 replies