25 %). Italian restaurants are at the second place (28.75 %). 10 % of classmates prefer to eat at the Chinese restaurant. Indian restaurants are the least popular among the classmates because only 5 % of them prefer it. 76.25 % of persons in the class prefer regular drinks, and 16.25 % of respondents prefer soft diet drinks. 2.5 % of classmates does not give preference to any of the drinks. 5 % of respondents did not answer this question. 81. 25 % of respondents will not go out of state during spring holydays. The rest (18.75 %) prefer to go out of state during Thanksgiving.
To describe the interval data the descriptive statistics and histograms were used (Anderson, Sweeney, and Williams 98-150). The results of data processing about age, miles from home and other interval data are the following. The minimal age in the class is 19 years. The maximal age is 51 years. The average age is 26.78 years. However, the histogram shows that the most of classmates are at the age 21-23 years. The second biggest age group is 25-27 years. The age of the classmates is not normally distributed. It is positively skewed because the biggest group of respondents has the age below the average age.
The minimal distance from home to class one way is 1 mile. The maximal value of this variable is 50 miles. The average distance from home to the class is 19.78 miles. According to the histogram, this variable is not normally distributed. There are two big groups of persons: classmates that live about 13 miles from the class and classmates that live about 19 miles from the class. The histogram for this variable is also positively skewed.
The minimal value for total credit hours being taken is 3 hours. The maximal value is 18 hours. The average number of hours is 10.475 hours. The most frequently occurred value (mode) is 12 hours. The median for this variable is also 12 hours. Median and mean values does not match, as well as mean and mode. It is the sign that the