Consider the data in the table below, which shows, by year, the percent of unemployed college graduates in a particular city who are 25 years or older.
| Year | 2000 | 2002 | 2005 | 2007 | 2010 |
|---|---|---|---|---|---|
| Percent Unemployed | 6.6 | 7.0 | 7.5 | 8.2 | 9.0 |
Find a linear regression model to predict the percentage of unemployed college graduates in a given year to five decimal places. In what year will the percentage exceed 10%? (Round your answer down to the nearest year.)
Consider the data in the table below, which shows, by year, the percent of unemployed college...
19. The percent of U.S. residents using the internet is given in the table below. Year Users (percent) Year Users (percent) 1997 22.2 2003 59.2 2000 44.1 2004 68.8 2001 50.0 2005 68.1 2002 58.0 2007 70.2 a. Find a logarithmic function that models the data, with x equal to the number years after 1995. b. Use the model to predict the percent of users in 2015. c. Will this model always be valid? Explain
12. In 2015, 88% of US residents used the internet, up from 14% in 1995 The table shows the percent who use the internet for selected years from 2000 and projected to 2025. Year 2000 2005 2010 2015 2020 2025 Percent 67 79 82 88 95 98 Find the logarithmic function that models the percent p as a function of x, the number of years after 1990. State the correlation coefficient. a) b) Use the model to predict the percentage...
We have data (given Below) that shows, the annual sales for four different companies (called company A, B, C and D) for duration of 2000-2010 years. Make two scatter plot for each company's annual sales. In first scatter plot show Linear regression, display its equations and the R-square value. And in the second scatter plot show Exponential Regression, display its equation and the R-square value. For each company answer which regression (linear or exponential) is a better fit for the...
BarrApCalcir7 23063 The following graph shows the average annual college tuition costs (tuition and fees) for a year at a private nonprofit or public four-year college. The data are given for five-year intervals. 30,000 25,000 20,000 private 15,000 F 10,000 5000 public 2010-2011 The tuition for a private college is approximated by the function f(x) = 650x2 + 3000x+12,000, where x 2000-2001 2005-2006 Year years in the graph are numbered x 0 through x 3). (a) Use this function to...
The accompanying data table show the percentage of tax returns
filed electronically in a city from 2000 to 2009. Complete parts a
through e below.
B.) Calculate the MAD for the forecast in part a
C.) Forecast the percentage of tax returns that will be
electronically filed for 2010 using exponential smoothing with
trend adjustment. set = 0.4 and
= 0.5
D.) Calculate the MAD for the forecast in part c
E.) In which forecast do you have the most...
how?
9. In 2015, 88% of US residents used the internet. The table shows the percent who use the internet for selected years from 2000 and projected to 2025. Year Percent 2000 67 2015 2010 82 79 95 98 (a) Use your calculator to find the natural logarithmic function that models the percent p as a func- tion of x, the number of years after 1990. Report the model with 4 significant digit coefficients. (b) Use the model to predict...
7. Study the table below and identify the following: a. years in which the economy expanded b. years in which the economy contracted c. peaks d. troughs Year 1998 Annual Percentage Change in Real GDP (2007 $) -3.1 2.6 5.7 5.2 2.8 4.6 Year 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 Annual Percentage Change in Real GDP (2007 $) 4.1 5.4 5.4 1.4 2.7 2.0 3.1 3.2 2.4 2.2 1.1 -2.9...
INCIDENCE OF ADOPTION-S-SHAPED CURVE Below is a dataset that shows the percent of a population by men and women living in a metropolitan area that purchased their smart phones from 2000 to 2017 (Table 1). Answer the following cuestions. Complete the following steps and answer the questions. Table 1: Percent of men and women who purchased their smart phones from 2000 to 2017 % of Adopters Cumulative % Year Men Women Men Women 2000 0 1 0 1 1. Exam...
The National Football League (NFL) records a variety of performance data for individuals and teams. To investigate the importance of passing on the percentage of games won by a team, the data in the Excel Online file below show the conference (Conf), average number of passing yards per attempt (Yds/Att), the number of interceptions thrown per attempt (Int/Att), and the percentage of games won (Win96) for a random sample of 16 NFL teams for a season. Construct a spreadsheet to...
The following table shows the inflation rate and unemployment rate, both in percent, for the years 1981-2008. We will investigate some methods for predicting unemployment. 4.4 X (L1) y (L2) Year Inflation Unemployment 1981 8.9 7.6 1982 3.8 9.7 1983 3.8 9.6 1984 3.9 7.5 1985 3.8 7.2 1986 1.1 7 1987 6.2 1988 4.4 5.5 1989 4.6 5.3 1990 6.1 5.6 1991 3.1 6.8 1992 2.9 7.5 1993 2.7 6.9 1994 2.7 6.1 1995 2.5 5.6 1996 5.4 1997...