he table below shows the average annual tuition and fees at private and public 4-year colleges and universities for the school years 2009-2010 through 2014-2015. (Source: National Center for Education Statistics). Year Private Public 2009-2010 31,448 15,014 2010-2011 32,617 15,918 2011-2012 33,674 16,805 2012-2013 35,074 17,474 2013-2014 36,193 18,372 2014-2015 37,385 19,203 a. Using 1 for 2009-2010, 2 for 2010-2011, and so on, find the equation of the regression line for the tuition and fees at private 4-year colleges and universities, based on the year. b. Using 1 for 2009-2010, 2 for 2010-2011, and so on, find the correlation coefficient for the tuition and fees at public 4-year colleges and universities, based on the year.

What is the approximate forecast for November using a four-month moving average? Oct - 700Sept - 600Aug - 880July - 670June - 430

1162,1116,1283,1277,1364,1322,1297,1206,1135,1316,1076,1172,1316,1212,1339,1199,1252,1125,1314,1306,1209 Price of Laptop Computers (in Dollars) Class Frequency Relative Frequency Cumulative Frequency 1073–1122 1123–1172 1173–1222 1223–1272 1273–1322 1323–1372 Step 1 of 4 : Determine the class width of the classes listed in the frequency table.

What is the median value of  1.8, 7.4, 27.5, 54.8, 8.5 ?

Consider the diagram below. 5.66 5.66 Which of the following represent the values of x, y, and z to the nearest hundredth? x = 9.78 y = 7,95

The following data report total, monthly U.S. gasoline sales in millions of dollars from January 2017 toDecember 2018. (To find the data, go to the site https://www.census.gov/retail/index.html#mrts, find“Monthly Retail Trade Report,” then select “Time Series/Trend Charts.”)Year   Month             Sales                                 ($ millions)2017   Jan                $35,6302017   Feb                  33,9722017   Mar                   38,6222017   Apr                    38,9732017   May                  40,7392017   Jun                   40,0092017   Jul                    39,7972017   Aug                  41,2172017   Sep                  41,3462017   Oct                   41,7172017   Nov                  40,1862017   Dec                  40,0462018   Jan                   39,2232018   Feb                   37,3772018   Mar                   42,6482018   Apr                    43,1092018   May                   48,0492018   Jun                    47,5462018   Jul…

A mother is creating the family budget for next year and wants to come up with a single value to estimate the cost of the water bill every month based on the total from last year divided by 12 months. Which descriptive statistic should she use? O Mode O Median O Mean

Calculate the mean of the following numbers: 15, 37, 50, 10, 24, 12, 32, 20. 25 40 20 22

A statistic is a measure that describes a population characteristic.

Define the concepts of percentile and interquartile range.