Over the 21-year period, that is an increase of 6.41 per year. The red trend line shows a very minor increase of 0.3054 points scored per game per year by year. The red line shows the least-squares regression line, which flattens out the ups and downs to show the overall trend. The blue line shows the average per year. The following graph shows the average points scored per game by year. The average over the 21 period is 0.0634, so an increase of 0.0168 per game represents a moderate increase. Over the 21-year period, that is an increase of 0.0168 per game. The red trend line shows a very minor increase of 0.0008 safties per game per year by year. The following graph shows the average safties per game by year. The average over the 21 period is 3.12, so an increase of 0.42 per game represents a significant change. Over the 21-year period, that is an increase of 0.4221 per game. The red trend line shows increase of 0.0201 field goals per game per year. The following graph shows the average field goals per game. The 0.086 increase per game represents 29% of the overall average per game. This may not sound like much, but the average two-point conversions per game over the 21-year period is 0.294. Over 21 years covered, that is an increase of 0.086 per game per year. The red trend line shows an increase of 0.0041 two-point conversions per game by year. The following graph shows the average two-point conversions after a touchdown per game. Over 21 years covered, that is an increase of 0.315 per game. The red trend line shows an increase of 0.015 touchdowns per game per year. This is obviously due to two-point conversion attempts becoming more popular. The red line shows the least-squares regression line, which flattens out the ups and downs to show the overall trend.Īlthough there is an increasing trend in more extra points per game by year, it isn't as strong as the increasing touchdowns. The following graph shows the average extra points after a touchdown per game by year. Over 21 years covered, that is an increase of 0.77 per game. The red trend line shows an increase of 0.0367 touchdowns per game per year. It's easy to see there the trend of increasing touchdowns. The blue line shows the average per game per year. The following graph shows the average touchdowns per game by year. This article is a simple look at the average number of each way to score in the NFL has changed in the 20-year period ending in 2020. NFL Average Scores per Game 2000-2020 Introduction
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