The data given below represent the weekly amounts ('000 Kyats) spent on food by 40 sample households in a community. 57 51 71 59 59 46 60 47 49 64 56 55 67 58 67 57 58 59 71 55 50 60 46 52 55 74 69 62 59 51 69 64 46 48 54 53 65 43 48 60 (i) Construct a frequency distribution having a class interval of 5. (ii) A majority of the households spent weekly how many amount on food? (iii) (What percent of the households spend more than 62.5 ('000 Kyats) per week? Less than 72.5 ('000 Kyats) per week? (iv) About how many households spent 70 ('000 Kyats) or less per week? (v) Construct a histogram. Are the data symmetric or skewed? (vi) Find the mean, median, mode, variance, standard deviation, range, interquartile range, quartile deviation, skewness, coefficient of variation