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# Re: st: STATA graph question: Combining Histograms

 From Nick Cox To statalist@hsphsun2.harvard.edu Subject Re: st: STATA graph question: Combining Histograms Date Wed, 17 Aug 2011 20:31:42 +0100

```We can let -rep78- of the auto data serve as a Likert scale. (The term
Likert honours Rensis Likert.)

Without code examples of what you tried what you want remains a bit
vague. Do you want axis scales? labels on the bars? or what?

Is this what you want?

. sysuse auto
(1978 Automobile Data)

. histogram rep78, freq

. tab rep78

Repair |
Record 1978 |      Freq.     Percent        Cum.
------------+-----------------------------------
1 |          2        2.90        2.90
2 |          8       11.59       14.49
3 |         30       43.48       57.97
4 |         18       26.09       84.06
5 |         11       15.94      100.00
------------+-----------------------------------
Total |         69      100.00

. histogram rep78, freq discrete barw(0.8)  yaxis(1 2) yla(6.9 "10"
13.8 "20" 20.7 "30" 27.6 "40" , axis(2)) ytitle("Percent", axis(2))

Here I did it by mental arithmetic after noting that 69 is 100% and 6.9 is 10%.

Nick

On Wed, Aug 17, 2011 at 8:19 PM, Marlis Gonzalez Fernandez
<mgonzal5@jhmi.edu> wrote:

> I am trying to combine frequency histograms for several questions into one graph.  Each variable has the answers to questions in a likert scale (always, frequently, infrequently, never, don't know).  I want to plot the frequency and percent for each question side by side.  Have not found a good way to do this.

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