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Jul 16, 2015 5:14 AM
(2073 views)

Hi

I think it's trivial but I've only started to learn JSL syntax and I'm struggling with this one.

Saying I have a column "myValues" that contains my numeric values and a column "myGroups" that is a categorical variable to group my values together. What formula can I use in a third column to get the mean of "myValues" group by group.

E.g.

myValues | myGroups | myMeans |
---|---|---|

1 | A | 2 |

2 | A | 2 |

3 | A | 2 |

4 | B | 5 |

5 | B | 5 |

6 | B | 5 |

7 | C | 7.5 |

8 | C | 7.5 |

9 | D | 9 |

Thank you

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Jul 16, 2015 6:34 AM
(3758 views)

7 REPLIES

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Jul 16, 2015 6:34 AM
(3759 views)

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Jul 16, 2015 7:45 AM
(1879 views)

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Oct 17, 2015 10:26 PM
(1879 views)

Can it give only one unique value, instead of repeated data points?

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Oct 19, 2015 4:38 AM
(1879 views)

for unique values try using Table Summary.

by the way, summarizing the table and then updating the original table can produce the same result as guilhem was asking for just without the formula.

ron

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Oct 19, 2015 7:31 AM
(1879 views)

Hi Ron,

yes, that would produce the same result. so i was asking if JMP can have non repeated data functionality in col mean( my values, mygrps).

Thanks

ram

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Oct 19, 2015 10:07 AM
(1879 views)

if you give an example perhaps i can understand better what you are looking for.

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Oct 20, 2015 2:44 AM
(1879 views)

The "ColStat" fumctions is mainly useful in column formulas and cannot return non-repeated values as far as I know.

But Summarize() can. Example:

Summatize**(**g = group**(**:mygrps**)**, m = Mean**(**my values**))**

Where **m** is matrix of the mean at each level of **g**, a list of group names (as strings). Excluded rows are not included.