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1. For four observations, it is given that mean is 6, median is 4, and mode is 3. Find the standard deviation of this sample.
2. The data given below pertain to a random sample of disbursements of state highway funds (in millions of dollars), to different states.
1188
1050
2882
2802
780
1171
685
537
519
2523
316
1117
1578
261
(a) Find the mean, variance, and range for these data and interpret.
(b) Find lower and upper quartiles, median and interquartile range. Check for any outliers and interpret.
(c) Construct a box plot and interpret.
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