How many trout were less than 20 inches long? Hint: 20 inches is the upper quartile of the box-and- whisker plot. So, 75% of the trout were less than 20 inches long. To find the answer: multiply the percentage (75%) x 20 (the number of inches) We use 75% because that is the Q3 in the data. 25% would be our Q1 and 50% is the median (or Q2).

Which of the three measurements, mean, median, or mode, is the most influenced by an outlier value that is either much higher or lower than the others in the dataset?  Explain how you chose your answer in the space provided below.

Recherchers conducted two surveys about teens are their use of social media. The First survey asked a Random sample of 800 U.S. teens about their use of Instagram. A second survey asked the same question to a Random sample of 2253 Canadian teens. In these two studies. 73% of U.S. teens and 88% of Canadian teens said that they use instagram. Use these results to answee the following questions about the proportion of U.S. and Canadian teens that use instagram. (Round to the nearest whole hundredth as needed).

a survey was given to 18 students. one question asked about the one-way distance the student had to travel to attend college. the results, in miles, are shown in the following table. use the median procedure for finding quartiles to find the first, second and third quartiles for the data.