## Sagi's Modelling Change project

To begin this project, I first had to choose a topic that later, I'll graph its change over the last years . My topic was the change in the population of India over the last 30 years .

Afterward, I began collecting the data and divided my data into three different sections. Later, I'll graph each section separately. My data was collected in millions.

Section 1
Section 2
Section 3

After I've finished collecting all of my data, I started graphing each section.

My graph divided into 3 sections

After graphing each one of the three sections, our next task was to find the y intercept and the slope of each section. Those were my calculations.

My calculations for the slope and the y intercept of section 1
calculations for section 2
My calculations for section 3

After calculating the y intercept and the slope of each section I had to find a line that best fits through my section, one line that connects as many dots as possible on the section. The way we calculated was done by simply putting a ruler on our computer screen and see if it is connecting between as many points as possible.

Our final task was to find a line that best fits into the whole graph. And since a line that could best fit my graph must be curved I used this equation: y = -790/x+1061.5 Based on that, we had to predict how would our data be like in 2067 and in 2112. Those were my calculations.

An equation that best fits through my graph
India population in 2067
India population in 2112

According to my graph, India will slow its population development.

My Final Graph

Credits:

Created with images by the opoponax - "India Itinerary - Option A"

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