QUESTIO Suppose the image below shows the distributions of scores on a standardized test for upperclassmen from two rivel high schools. 020 015 010 Which of the following statements can be made? O A. The two high schools' upperclassman have the same mean and same variance. OB. The two high schools' upperclassman have the same mean but difference variance. OC. The two high schools' upperclassman have a different mean and a different variance. D. None of the statement above can be inferred from the image.

Solution and working

The ages​ (in years) of a random sample of shoppers at a gaming store are shown. Determine the​ range, mean,​ variance, and standard deviation of the sample data set. 12, 20, 23, 13, 18, 17, 22, 17, 15, 16 The range is The mean is ( Simplify your answer. Round to the nearest tenth as​ needed.) The variance is (Simplify your answer. Round to the nearest hundredth as​ needed.) The standard deviation is (Simplify your answer. Round to the nearest tenth as​ needed.) Can you please explain me this math problem having trouble understanding. Thank you.

The table below shows the frequency of AP Biology scores for a high school class. AP Score Frequency 1 5 2 7 3 6 4 4 5 3 Find the mean and median. Mean = 1.67 and Median = 2 Mean = 2.72 and Median = 3 Mean = 2.72 and Median = 7 Mean = 4.53 and Median = 4 Mean = 4.53 and Median = 3