1. Farming has changed from the early 1900s. In the early 20th century, machinery gradually replaced animal power. For example, in 1910 U.S. farms used 24.2 million horses and mules and only about 1,000 tractors. By 1960, 4.6 million tractors were used and only 3.2 million horses and mules. In 1920, there were over 6 million farms in the United States. Today there are fewer than 2 million. Listed below is the number of farms, in thousands, for each of the 50 states. Write a paragraph summarizing your findings. 47 1 8 4 7 15 14 35 2288 21 80 52 87 38 59 86 185 13 42333 46 76 26 63 100 65 39 106 76 71 7 43 +1536 25214 4 91 29 55 37 32252 51 20 37718 39 79 55819 45 24 a. Organize the data into a frequency distribution. How many classes would you suggest? b. What value would you suggest for a class interval? c. Draw a histogram. d. Plot a frequency polygon. e. Interpret your result about the Skewness. f. Construct a cumulative frequency distribution. g. Sketch a graph of the cumulative frequency polygon. h. Determine the mean, variance and standard deviation of the distribution.