I know how to do the scatter plots, but these questions I do not understand. How good (Strong, Weak, Moderate) is the correlation between x and y for this data? b. Interpret the slope of the trendline in a meaningful sentence. c.Use the trend line equation to estimate the value for the last available year’s data, show how you did this. d. Compare the equation value from part 2c to the actual value from the data. e. Choose a year other than the one from part 2c. A birth year or the first year might be a good choice .i. Use the trend line equation to estimate the y-value for the year of your choice. ii. Find the relative change in the y-vale for your chosen year compared to the last year’s value you found in part 2c. iii. Interpret the meaning of your relative change value. f.Should we use the trend line model to estimate the y-value for 2020? Why or why not Year Discards(billion in lbs) Plastic Waste 1990 34 1991 35 1992 36 1993 37 1994 37 1995 36 1996 37 1997 41 1998 42 1999 46 2000 48 2001 49 2002 52 2003 53 2004 56 2005 55 2006 56 2007 58 2008 56 2009 56 2010 58 2011 58 2012 58
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
I know how to do the
How good (Strong, Weak, Moderate) is the
b. Interpret the slope of the trendline in a meaningful sentence.
c.Use the trend line equation to estimate the value for the last available year’s data, show how you did this.
d. Compare the equation value from part 2c to the actual value from the data. e. Choose a year other than the one from part 2c. A birth year or the first year might be a good choice
.i. Use the trend line equation to estimate the y-value for the year of your choice.
ii. Find the relative change in the y-vale for your chosen year compared to the last year’s value you found in part 2c.
iii. Interpret the meaning of your relative change value. f.Should we use the trend line model to estimate the y-value for 2020? Why or why not
| Year | Discards(billion in lbs) | Plastic Waste | ||||||||||
| 1990 | 34 | |||||||||||
| 1991 | 35 | |||||||||||
| 1992 | 36 | |||||||||||
| 1993 | 37 | |||||||||||
| 1994 | 37 |
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| 1995 | 36 | |||||||||||
| 1996 | 37 | |||||||||||
| 1997 | 41 | |||||||||||
| 1998 | 42 | |||||||||||
| 1999 | 46 | |||||||||||
| 2000 | 48 | |||||||||||
| 2001 | 49 | |||||||||||
| 2002 | 52 | |||||||||||
| 2003 | 53 | |||||||||||
| 2004 | 56 | |||||||||||
| 2005 | 55 | |||||||||||
| 2006 | 56 | |||||||||||
| 2007 | 58 | |||||||||||
| 2008 | 56 | |||||||||||
| 2009 | 56 | |||||||||||
| 2010 | 58 | |||||||||||
| 2011 | 58 | |||||||||||
| 2012 | 58 |
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