The speed (km/hour) of thirty cars on the Changlun-Kuala Perlis highway was recorded as follows: 110, 118, 85, 92, 93, 105, 112, 100, 99, 106, 87, 99, 86, 84, 122, 117, 102, 109, 120, 121, 104, 99, 99, 100, 95, 93, 110, 94, 97, 105 i. Construct a stem-and-leaf plot. ii. Using the plot, calculate and interpret the mean, median, mode of the car speeds. iii. What can you say about the distribution of the car speeds? Explain your reason. iv. V. Calculate the range, variance, standard deviation. Use Microsoft Excel for calculation. Using the plot, calculate the first and third quartile. Interpret the values. vi. Calculate and interpret the interquartile range (IQR). vii. Construct a boxplot by using the five-number-summary. viii. Check whether there is an outlier or not? Comment on the skewness of the data.