statistics homework help?
Q. U.S. Census Bureau estimates of the average number of persons per household in the United States for census years between 1850 and 2000 are shown in the following table. Year Per House 1850 5.55 1860 5.28 1870 5.09 1880 5.04 1890 4.93 1900 4.76 1910 4.54 1920 4.34 1930 4.11 1940 3.67 1950 3.37 1960 3.35 1970 3.14 1980 2.76 1990 2.63 2000 2.59 (a) Determine the least squares line for these data. Use the equation of this line to estimate the number of persons per household in the year 2011. (b) What is the slope of the line? (c) Based on the regression line, what would be the predicted persons per household in the year 2300? (d) What is the lowest possible value of… [cont.]
Asked by Erin - Wed Feb 18 12:23:26 2009 - - 2 Answers - 0 Comments
A. (a) The least squares regression line is y = 44.392 - 0.0209x where x is the year and the estimate for 2011 would be 2.36 persons. (b) The slope is therefore -0.0209 persons per year. That means the average occupancy is falling by about one person every 50 years. (c) For x = 2300, y = -3.7, which is clearly nonsense. (d) The minimum occupancy could be zero, if everyone was a vagrant and no one ever lived at an address; or 1.0 if everyone has to be listed as living somewhere ! The problem with this analysis arises from the assumption that the relationship is a straight line. Obviously it's not.
Answered by Victor - Wed Feb 18 12:41:44 2009
Q. U.S. Census Bureau estimates of the average number of persons per household in the United States for census years between 1850 and 2000 are shown in the following table. Year Per House 1850 5.55 1860 5.28 1870 5.09 1880 5.04 1890 4.93 1900 4.76 1910 4.54 1920 4.34 1930 4.11 1940 3.67 1950 3.37 1960 3.35 1970 3.14 1980 2.76 1990 2.63 2000 2.59 (a) Determine the least squares line for these data. Use the equation of this line to estimate the number of persons per household in the year 2011. (b) What is the slope of the line? (c) Based on the regression line, what would be the predicted persons per household in the year 2300? (d) What is the lowest possible value of… [cont.]
Asked by Erin - Wed Feb 18 12:23:26 2009 - - 2 Answers - 0 Comments
A. (a) The least squares regression line is y = 44.392 - 0.0209x where x is the year and the estimate for 2011 would be 2.36 persons. (b) The slope is therefore -0.0209 persons per year. That means the average occupancy is falling by about one person every 50 years. (c) For x = 2300, y = -3.7, which is clearly nonsense. (d) The minimum occupancy could be zero, if everyone was a vagrant and no one ever lived at an address; or 1.0 if everyone has to be listed as living somewhere ! The problem with this analysis arises from the assumption that the relationship is a straight line. Obviously it's not.
Answered by Victor - Wed Feb 18 12:41:44 2009
Those of you who are generation Y, are you aware that the term "Asian" wasn't invented till the 1980s?
Q. Generation Y YA users, how much do YOU know about the history of "Asians"? But you don't know about it much. If you are interested, read below and share your thoughts. "The 1960 census racial categories included American Indian, Chinese, Filipino, Hawaiian, Japanese, Negro, part Hawaiian, White, Eskimo and Aleut" "The 1970 census racial categories included: Chinese, Filipino, Hawaiian, Indian American, Japanese, Negro or Black, other, White, Hispanic origin of any race, and White, not of Hispanic origin. Mexicans were counted as white from 1930 until 1970, when they re-entered the census as Hispanic origin. It was a deliberate effort to count Hispanics without treating them as a race. They were to be considered a cultural/linguistic… [cont.]
Asked by Yong - Peng Suen - Thu Feb 5 14:37:29 2009 - - 10 Answers - 0 Comments
A. Can You Get a Grip...Lmao.
Answered by x_ od_x - Thu Feb 5 14:40:28 2009
Q. Generation Y YA users, how much do YOU know about the history of "Asians"? But you don't know about it much. If you are interested, read below and share your thoughts. "The 1960 census racial categories included American Indian, Chinese, Filipino, Hawaiian, Japanese, Negro, part Hawaiian, White, Eskimo and Aleut" "The 1970 census racial categories included: Chinese, Filipino, Hawaiian, Indian American, Japanese, Negro or Black, other, White, Hispanic origin of any race, and White, not of Hispanic origin. Mexicans were counted as white from 1930 until 1970, when they re-entered the census as Hispanic origin. It was a deliberate effort to count Hispanics without treating them as a race. They were to be considered a cultural/linguistic… [cont.]
Asked by Yong - Peng Suen - Thu Feb 5 14:37:29 2009 - - 10 Answers - 0 Comments
A. Can You Get a Grip...Lmao.
Answered by x_ od_x - Thu Feb 5 14:40:28 2009
Math test help!!!! 50 point question!!!?
Q. The table gives the population of the united states, in millions for the years 1900-1990? YEAR - Population 1900 - 76 1910 - 92 1920 - 106 1930 -123 1940 -131 1950- 150 1960 - 179 1970- 203 1980 - 227 1990 - 250 A. Use the exponential model and the census figures for 1900 and 1910 to find equation, use that to predict the population for 1990. Compare with the actual figure and try to explain the discrepancy. B. Use the exponential model and the census figures for 1970 and 1980 to find an equation, use that to predict the population for 1990.Compare with the actual population. Use this model to predict the population in the years 2000 and 2010.
Asked by Dani - Sun Apr 6 15:34:48 2008 - - 1 Answers - 0 Comments
A. A. The increase of population from1900 to 1910 was 16 mil which is 21.05% increase. Using that as the percentage in the formula, and 76 as the initial population, the equation is: 76 e^.2105t where t is the number of decades past 1900. The discrepency could be a larger percentage increase between 1900 and 1910 than other decades. B. Using 1970 and 1980 gives a different percentage of increase at 11.82%. The equation now changes to: 203 e^.1182t with t = # of decades so the population prediction is 289.4 mil in 2000 and 325.7 mil. in 2010
Answered by Rusty - Sun Apr 6 20:09:12 2008
Q. The table gives the population of the united states, in millions for the years 1900-1990? YEAR - Population 1900 - 76 1910 - 92 1920 - 106 1930 -123 1940 -131 1950- 150 1960 - 179 1970- 203 1980 - 227 1990 - 250 A. Use the exponential model and the census figures for 1900 and 1910 to find equation, use that to predict the population for 1990. Compare with the actual figure and try to explain the discrepancy. B. Use the exponential model and the census figures for 1970 and 1980 to find an equation, use that to predict the population for 1990.Compare with the actual population. Use this model to predict the population in the years 2000 and 2010.
Asked by Dani - Sun Apr 6 15:34:48 2008 - - 1 Answers - 0 Comments
A. A. The increase of population from1900 to 1910 was 16 mil which is 21.05% increase. Using that as the percentage in the formula, and 76 as the initial population, the equation is: 76 e^.2105t where t is the number of decades past 1900. The discrepency could be a larger percentage increase between 1900 and 1910 than other decades. B. Using 1970 and 1980 gives a different percentage of increase at 11.82%. The equation now changes to: 203 e^.1182t with t = # of decades so the population prediction is 289.4 mil in 2000 and 325.7 mil. in 2010
Answered by Rusty - Sun Apr 6 20:09:12 2008
Calculus word problem?
Q. The table gives the population of the United States, in millions, for the years 1900-2000. YearPopulation 190076 191092 1920106 1930123 1940131 1950150 1960179 1970203 1980227 1990250 2000275 (a) Use the exponential model and the census figures for 1900 and 1910 to predict the population in 2000. P(2000) =___million (b) Use the exponential model and the census figures for 1980 and 1990 to predict the population in 2000. P(2000) =___million
Asked by Mlukm - Wed May 20 23:39:25 2009 - - 1 Answers - 0 Comments
A. don't see why this is a calc problem Oo. Exponential model is A = Pe^(rt) P is how much you start with. A is howmuch you end up with. and t is the amount of time passed. So from 1900 to 1910, the amount of time passed is 10 years, and 76 is how much you start with (P) 92 is how much you end with (A) so you have 92 = 76*e^(r*10) Solve this for r. (I'm too lazy.) and then replace that value of r into your equation. Now you have the power to predict what the population will be in 2000. Just use the started population in 1910 as you (A) and leave P as your variable. Use t = 90, (90 years from 1910 to 2000) and the rate you found in the first problem. The only variable you should have left is P, which is your prediction… [cont.]
Answered by Ken - Wed May 20 23:49:03 2009
Q. The table gives the population of the United States, in millions, for the years 1900-2000. YearPopulation 190076 191092 1920106 1930123 1940131 1950150 1960179 1970203 1980227 1990250 2000275 (a) Use the exponential model and the census figures for 1900 and 1910 to predict the population in 2000. P(2000) =___million (b) Use the exponential model and the census figures for 1980 and 1990 to predict the population in 2000. P(2000) =___million
Asked by Mlukm - Wed May 20 23:39:25 2009 - - 1 Answers - 0 Comments
A. don't see why this is a calc problem Oo. Exponential model is A = Pe^(rt) P is how much you start with. A is howmuch you end up with. and t is the amount of time passed. So from 1900 to 1910, the amount of time passed is 10 years, and 76 is how much you start with (P) 92 is how much you end with (A) so you have 92 = 76*e^(r*10) Solve this for r. (I'm too lazy.) and then replace that value of r into your equation. Now you have the power to predict what the population will be in 2000. Just use the started population in 1910 as you (A) and leave P as your variable. Use t = 90, (90 years from 1910 to 2000) and the rate you found in the first problem. The only variable you should have left is P, which is your prediction… [cont.]
Answered by Ken - Wed May 20 23:49:03 2009
History Readings for College Course (Cont.)?
Q. 122. Kerr, K. Austin. Organized Prohibition; A New History of the Anti-Saloon League. 123. Kim, Elaine. East to America Korean-American Stories. 124. Kimmel, Michael. Manhood in America: A Cultural History. 125. Kohl, Lawrence Frederick. The Politics of Individualism: Parties, the American Character in the Jacksonian Era. 126. Kolata, Gina. Flu The Great Influenza Pandema of 1918. 127. Koontz, Stephanie. The Way We Never Were. 128. Koop, C. Everett, The Memoirs of Americia's Family Doctor 129. Krugman, Paul. The Age of Diminished Expectations. 130. Laguerre, Michel. Diasporic Citizenship: Haitian-American in Transitional America. 131. Lappe, Frances Moore. Rediscovering America s values. 132. Larson, Louise Leung. Sweet Bamboo: A Saga of a… [cont.]
Asked by Fran M - Sat Sep 19 22:24:54 2009 - - 1 Answers - 0 Comments
A. you can find the readings on Google.
Answered by FOX News is the best - Wed Sep 23 20:22:04 2009
Q. 122. Kerr, K. Austin. Organized Prohibition; A New History of the Anti-Saloon League. 123. Kim, Elaine. East to America Korean-American Stories. 124. Kimmel, Michael. Manhood in America: A Cultural History. 125. Kohl, Lawrence Frederick. The Politics of Individualism: Parties, the American Character in the Jacksonian Era. 126. Kolata, Gina. Flu The Great Influenza Pandema of 1918. 127. Koontz, Stephanie. The Way We Never Were. 128. Koop, C. Everett, The Memoirs of Americia's Family Doctor 129. Krugman, Paul. The Age of Diminished Expectations. 130. Laguerre, Michel. Diasporic Citizenship: Haitian-American in Transitional America. 131. Lappe, Frances Moore. Rediscovering America s values. 132. Larson, Louise Leung. Sweet Bamboo: A Saga of a… [cont.]
Asked by Fran M - Sat Sep 19 22:24:54 2009 - - 1 Answers - 0 Comments
A. you can find the readings on Google.
Answered by FOX News is the best - Wed Sep 23 20:22:04 2009
From Yahoo Answer Search: '1960 United States Census'
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That increase is powered both by birthrates, because the minority population tilts young, and a powerful tide of immigration: The Census Bureau calculates ...
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