Professional statistician is here with vast statistical analysis capacity and SPSS statistics. I am a professional statistician with major in advanced statistics and SPSS at postgraduate level. I have assisted 7 PhD (another is on going, check my profile,) and many MS research projects ( one in Psychology)as well as worked for 2 Australian Business firms, my responsibilities were, to organize data from various sources (i.e. Survey monkey, Previous research), Make them usable to analysis in SPSS, Excel or STATA and other analytic software, perform several analysis (i.e. Normality test, Normal distribution, Histogram, Frequency distribution, Descriptive statistics (i.e. Mean, median, mode, Std), Hypothesis testing (Chi test, U-test, T-test), Correlations and so forth). I can perform any analysis and can also help to find proper way to do them. Regarding your project my experience meets 100%, i can produce the normal curves easily from histogram of your data. Here is the point i am making, i am a pro data analyzer and also a scientific researcher. I also have some international journals based on statistical analysis and advanced research. I can deliver you the best (check my profile feedback regarding statistics and academic writing). let us discuss, thanks, Regards; Labib