Should you use the median or mean to describe a data set if the data are not skewed? Are the  standard deviation or the interquartile range factors?

Respond to one of the following questions in your initial post:

• Should you use the median or mean to describe a data set if the data are not skewed? Are the  standard deviation or the interquartile range factors?
• You may read in the newspaper that a study of a new drug for cancer “increased survival by an average of eight weeks.” It turns out that this is a median, and it is used for complicated statistical reasons. But in a perfect world, would you prefer to know the increase in mean or median survival?
• If the median house price is $1.9m, does that necessarily mean that half of the houses on the block are worth less than $1.9m and half worth more? How do ties figure in?