# descriptive statistics

1. ### Descriptive Statstics Question!!

Hey guys, I need your help: I got following question: Six customers have Tested a new chocolate bar an have rated it on 0-10 scale (10=best) . Calculate the average rating based on how often the customers go shopping and how many chocolate bars they usually buy each time they go...
2. ### How to analyze statistical difference between averages of mode, mean and median?

Attached is the graph with my data: I have 4 distributions of particles of different sizes. For each one of them, a particle size frequency distribution has been measured three times. Median, mean and mode were calculated for each frequency distribution and averaged for each of the four...
3. ### Contributions to writing code that enable R to analyze the "Descriptive" statistics

Apparently R does use only the raw data. In some other statistical programs, there is the option to calculate some simple tests, only by inputting the descriptive statistics. I for one think it would be much better if we could enable R to run such tests too. There are not many tests that can...
4. ### Whether to interpret based on descriptive or infferential statistics in present case?

In our study which is already completed, I have three groups: Drug A(n=87), Drug B(=62) and Drug C(n=5). The Shapiro-Wilk test, Histograms and Side-by-side Box plots were used to assess normality of the data of the individual group with respect to all the parameters used separately (weight, BMI...
5. ### Descriptive Summations

How would I go about solving this? 1/nΣxi^2=100 and 1/nΣxi=2. Define yi=2xi+1 and find 1/nΣyi^2.
6. ### Creating new variable?

I think what I need to do is create/compute a new variable, but I'm not sure. I'm looking at incidence of cavities in teeth. The way I collected the data is by individual tooth were 0 = no cavities, 1 = one cavity, 2 = one or more cavity in the tooth. But now I want to look at the incidence...
7. ### Discussing a model design

I am a software developer and like stats but no professional so I would like your opinon on how to build a concrete statistical model the goal is to understand what are the most eaten foods in Austria I would like to know what you think of my approach: I go to a supermarket and observe the...