The data below are the number of U. S. citizens (in thousands) identifying solely as Native Americans in the 2010 census for the 22 states west of the Mississippi River. 363 322 297 193 171 104 72 63 61 56 53 37 33 32 31 28 27 22 21 18 13 11 Find each of the four measures of average for the data, then discuss any similarities or differences among the four.

On a certain portion of an experiment, a statistical test result yielded a p-value of 0.21. what can you conclude? 2(0.21) = 0.42 < 0.5; the test is not statistically significant. if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 21% of the time, so the test is not statistically significant. 0.21 > 0.05; the test is statistically significant. if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 79% of the time, so the test is not statistically significant. p = 1 - 0.21 = 0.79 > 0.05; the test is statistically significant.