Plz analyse the result and provide the answer in statistics term for all the questions.

QUESTION 1

\fAccuracy Comparison(NB/TF-IDF) 77 74.125 Accuracy 71.25 68.375 65.5 un-preprocessed Segmented Segmented_no_stopwords Scenarios Testing Ratio Series " 30% 50% 70% 90%Using Ngram_range in Naive bayes(NB) classifier NB scenarios(TF-IDF(ngram_range)) Unigram(1.1) Unigrams&Bi-grams(1.2) Bi-gram(2.2) un-preprocessed 68.203 70.644 52.8 Preprocessed 67.729 70.915 53.763 Stemmed 60.502 70.807 57.627 Segmented 62.847 70.942 62.766 Preprocessed_no_stopwords 67.566 69.79 48.895 Stemmed_no_stopwords 60.325 68.773 51.403 Segmented_no_stopwords 62.712 69.79 59.837ngram_range For SVM Classifier 96 94.75 Unigram(1.1) Unigrams&Bi-grams(1.2) Bi-gram(2.2) 93.5 92.25 91 Preprocessed Segmented Stemmed no stopwords