Descriptive statistic Essay
Table 1 shows the descriptive statistics about the 74 models of automobiles released in the year 1978, these include the automobiles’ price, mileage, repair record, headroom, trunk space, weight, length, turn circle, displacement and the gear ratio with its corresponding results. In terms of automobiles’ price, it ranges to $3,291.00 up to $15,906.00 for the period of the said year. Its average price is $6,165.26 with a standard deviation of $2,949.50. It can be seen that prices are not close by to one another. With regards to mileage, the majority of the automobiles runs 41 miles for every gallon of gasoline, while the least runs only for 12 miles. The mean of mileage has resulted to 21.30 mpg, with a standard deviation of 5.79 mpg. As to the variable repair record it can be seen that only 69 were observed out of the 74 automobiles. The highest occurrence of repairs made is five times, whereas the least occurs only one time. The average repair recorded is 3.41 times while its standard deviation is only .98. It is also seen the data about the portion of automobiles’ headroom in inches.
The automobile recorded with the largest headroom has 5 inches size however the smallest only got 1.5 inches. Further, the average headroom is 2.99 inches, changing at a standard deviation of .85. Respectively, the trunk of automobiles is given measured in cubic feet. The largest trunk noted has a 23 cu. ft. of space, on the other hand the least has a size of 5 cu. ft. The mean size of the trunk got a 13.76 cu. ft. having a standard deviation of 4.28 cu. ft. The automobiles’ weight resulted with the heaviest model got a 4,840 lbs. while the lightest among them weighs 1,760 lbs. The average weight of automobiles recorded is 3.019.46 lbs. A standard deviation of 777.19. While the measurement of automobiles’ length got a longest and shortest measure of 233 inches and 142 inches, respectively.
The average length of the automobiles is 187.93 inches with a standard deviation of 22.27 inches. The highest measure of turn circles gathered is 51 ft. while, the lowest gathered measure is 31 ft. The average measurement of turn circles is 39.65 ft. varying at a standard deviation of 4.40 ft. As to the measurement of the displacement, the highest got a size of 425 cu. in. and the least got a size of 79 cu. in. The average measurement is 197.30 cu. in. and a standard deviation of 91.84 in.cu. The gear ratio shows a result that its average/mean is 3.01. It ranges to 2.19 up to 3.89 with a standard deviation of .46.