The scatter plot and table below show 8 data points that were collected to compare battery life to the temperature of the battery's environment. 60 y 82 58 55 87 57 82 55 55 55 58 56 54 55 51 54 53 53 45 50 55 60 65 70 75 80 85 90 Тетрerature (F) The sums of x , y , x² , y² , and xy are shown below: xy 522 443 35732 24549 29031 The estimates for the slope and intercept of the regression line are 6 = 0.075 hours per degree a = 50.481 hours Battery Lifetime (Hrs)

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Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.