I need help understanding these practice questions, please explain the steps.

Find the mean of the quiz scores in the table to the right We mean is D {Round to the nearest tenth.) Find the median for the following list of numbers. 28.3, 9.1, 3.6, 27.8, 59.8, 32.4, 47.7, 29.8 The median is "Round to the nearest tenth as needed.)The following pulse rates were recorded for a group of 15 students. Find the mode. 76, 78, 64, 66, 69, 62, 80, 69, 68, 63, 68, 73, 75, 84, 70 Find the mode. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The mode(s) is/are (Type an integer or a decimal. Use commas to separate answers as needed.) O B. There is no mode.For grouped data, the modal class is the interval containing the most data values. Find the modal class for the given collection of grouped data. O A. 90-109 Interval Frequency O B. 50-69 30-49 3 50-69 10 O C. 70-89 70-89 19 O D. 110-129 90-109 22 110-129 11The revenue for a corporation for the years 2003-2012 is given in the table. Complete parts (a) and (b) below. Year 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Revenue 4078.3 5286.5 6360.9 7786.2 9407.4 10,379.6 9766.8 10,697.6 11,698.5 13,297.7 (a) Calculate the mean and median for these data. The mean is $ . (Round to two decimal places as needed.)For the data in the table, find the mean and the median of the monthly high temperatures. Then do the same for the monthly low temperatures. Month High Low Jan 19 10 Feb 22 12 Temperatures are in degrees Mar 31 20 Fahrenheit Apr 41 28 May 54 43 The mean of the high temperatures is OF . (Type an integer or a decimal.)Compute the GPA for the following student. Letter Grade Value Frequency A 4 17 B 3 59 C 2 16 F GPAE Round to two decimal places