The number of hours of video uploaded to YouTube per minute is shown in the table below. Year # of hours of video uploaded per minute 2007 6 2008 10 2009 20 2010 24 2011 48 2012 60 2013 100 Let y be the video upload rate at x years since 2005. Construct a scatterplot by hand. Is the relationship linear or exponential? Increasing or decreasing? Write an equation modeling the number of hours of video uploaded per minute if the initial number of hours is 2.6 and it increases by 59%.
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.
- The number of hours of video uploaded to YouTube per minute is shown in the table below.
|
Year |
# of hours of video uploaded per minute |
|
2007 |
6 |
|
2008 |
10 |
|
2009 |
20 |
|
2010 |
24 |
|
2011 |
48 |
|
2012 |
60 |
|
2013 |
100 |
Let y be the video upload rate at x years since 2005.
- Construct a
scatterplot by hand.
- Is the relationship linear or exponential? Increasing or decreasing?
- Write an equation modeling the number of hours of video uploaded per minute if the initial number of hours is 2.6 and it increases by 59%.
- Use your equation to find the number of hours uploaded in 2015.
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