The temperature measured on the top of Big Bear Mountain at 10:00am on 12 consecutive days is as follows: 54, 55, 55, 39, 42, 55, 55, 56, 47, 64, 69, 65 Find the mean, median, and mode. Find the...

1. The temperature measured on the top of Big Bear Mountain at 10:00am on 12 consecutive days is as follows:

54, 55, 55, 39, 42, 55, 55, 56, 47, 64, 69, 65

1. Find the mean, median, and mode.


2. Find the sample variance and standard deviation.


3. What percentage of the observations fall within two standard deviations of the mean? Comment (i.e., say something about the distribution of the data and offer some supporting evidence without actually graphing the relative frequency distribution).