12-08-2006, 10:11 AM | #1 (permalink) |
big damn hero
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Help me understand something statistic related.
I've been saddled with this survey thing at work and so far, I've been able to muddle through, but I've hit a bit of a roadblock.
Let's say the survey asks the respondent to rate a series of services using a Likert (I think that's what she called it) scale of 1-4 where 1=very dissatisfied and 4=very satisfied. So, let's say that--and I'm going to be making these numbers up and they will be deliberately low as it will help me to understand--that 100 people were very satisfied with our book selection; 113 were satisfied; 57 were dissatisfied and 30 were very dissatisfied. What I'm looking for is the average response, for example, "On a scale of 1-4 with blah blah blah, the average response was 3.28." I should point out that Mathematics...well, we aren't on good terms. Although I 'get' the big concepts in the abstract, anything beyond college level algebra in a practical sense, I don't really understand. So...the simpler the better, eh? As always, any and all help is greatly appreciated.
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12-08-2006, 11:05 AM | #2 (permalink) |
Junkie
Location: Some place windy
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I might use a larger scale and include a neutral point (neither satisfied, nor dissatisfied), but if you're just looking for the average, each person's response is a score, add up all of the responses and divide by the number of responses.
((113 x 3)+(57 x 2)+(30 x 1))/200 |
12-08-2006, 11:33 AM | #3 (permalink) | |
pigglet pigglet
Location: Locash
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Bascially gothmund, you're just adding up all the responses, and then dividing by the total number of responses. The multiplication steps in the above just speed it up. If you're tallying these in Excel, then it has an 'average' function that will calculate it for you.
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You don't love me, you just love my piggy style |
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12-09-2006, 06:50 AM | #4 (permalink) | |
Likes Hats
Location: Stockholm, Sweden
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12-10-2006, 08:53 PM | #6 (permalink) | |
Psycho
Location: Princeton, NJ
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There's a really intersting study that found that upwards of 40% of the population will express an opinion on a totaly made-up issue if you don't include a "don't know" option. |
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12-11-2006, 08:08 AM | #7 (permalink) | ||
Junkie
Location: Some place windy
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More agreement with icky: I like "don't know" in addition to "Neither satisfied nor dissatisfied". Not knowing is different from being neutral, just ask Switzerland. |
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related, statistic, understand |
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