12.  Find the variance and standard deviation for the given…

12.  Find the variance and standard deviation for the given data by hand.  {8 pts.} (Show all steps!  Answers alone receive no credit!)   To get the best deal on a recliner, Jason called six furniture stores and asked the cost of a recliner. The prices he was quoted are listed below:   $589             $275             $865             $496             $638             $410   Use the formulas s2=Σ(x-x¯)2n-1{“version”:”1.1″,”math”:”s2=Σ(x-x¯)2n-1″} and s=s2{“version”:”1.1″,”math”:”s=s2″}   x x-x¯{“version”:”1.1″,”math”:”x-x¯”} (x-x¯)2{“version”:”1.1″,”math”:”(x-x¯)2″}                                                                                                          

15.  A data set has a mean of 9, a median of 13, and a stand…

15.  A data set has a mean of 9, a median of 13, and a standard deviation of 2.8.  Each data point in the set is tripled.  What is the new mean and median? {4 pts.}   Mean:  ___________                   Median:  _________