Blog post barryclark#7

_posts/2019-07-24-a-closer-look.md

@@ -11,6 +11,8 @@ In the last post, [Which parks are the most popular?](http://goodmorningdata.com
 The parks in Quadrant I have the highest mean visits per capita since 1967<sup>*</sup> and an increasing visit change rate since that year. The plot below shows the data for four of these parks.
 <sup>*</sup><span style="font-size:10pt;">1967 is the first year in which total national park visits per capita declined since the end of WWII. I am using 1967 as the starting year of stablized park visitation numbers.</span>
 
+![Quadrant image]({{ site.baseurl }}/assets/07_census_park_visits_per_capita_vs_year_4_parks_q1.png)
+
 ![Line plot image]({{ site.baseurl }}/assets/07_census_park_visits_per_capita_vs_year_4_parks_q1.png)
 
 Glacier and Yellowstone show visits per capita bouncing around a per capita rate of .006 and .011 respectively with a steady increase over time. Zion shows a real change - a very steady increase up to Yellowstone levels, and still climbing. Zion actually is the park with the maximum per capita visit change rate of all the national parks. Having been there, I can attest to its massive popularity. It is amazingly beautiful and crowded - a challenge for the NPS. One of these things is not like the others, and this is Cuyahoga Valley National Park. Its popularity is not increasing, in fact, its visits per capita have been going down for some time. CVNP experienced a huge surge in visits in 2000 when it was redesignated from a national recreation area to a national park. Since then, its per capita visists have been declining, but that initial surge is still driving the regression line upward. It looks like a change to my methodology of determining popularity is in order. Instead of calculating the regression line beginning in 1967 when visits per capita started to stablize, I may want to use a later date to give greater weight to recent visit numbers.