Bids were placed in a silent auction for a sword reputed to have been used at the Battle of Hastings, worth a reported $20,000. The respective bids (in thousands of dollars) placed by the 8 bidders were as follows: 25, 21, 25, 26, 18, 25, 24, 29 Send data to calculator (a) What is the mean of this data set? If your answer is not an Integer, round your answer to one decimal place. (b) What is the median of this data set? If your answer is not an integer, round your answer to one decimal place. (c) How many modes does the data set have, and what are zero modes their values? Indicate the number of modes by clicking in the appropriate circle, and then indicate the value(s) of the one mode: mode(s), if applicable. two modes: and X