Graphing Data Sets In Exercises 17–32, organi...

Question

Graphing Data Sets In Exercises 17–32, organize the data using the indicated type of graph. Describe any patterns.

Engineering Degrees Use a time series chart to display the data shown in the table. The data represent the number of bachelor’s degrees in engineering (in thousands) conferred in the U.S. (Source: U.S. Deapartment of Education)

Time-series graph showing the number of engineering bachelor's degrees conferred in the U.S. from 2011 to 2019.

Accepted Answer

Hello there. Today we're gonna solve the following practice problem together. So, first off, let us read the problem and highlight all the key pieces of information that we need to use in order to solve this problem. Use a time series chart to display the data shown in the table below. The data represents the number of electric vehicles and units of thousands sold from 2015 to 2020. Awesome. So it appears for this particular problem we're asked to use a time series chart or graph to display the data that is shown in the table that's provided to us. So with that in mind, let's look at the table that is provided to us. So we have our first row, which represents the year for 2015, 2016, 2017, 2018, 2019, and 2020. Then we have our second row, which is the vehicle sold in thousands, starting at 2015 and then ending in 2020, we have 120, 160, 200, 360, 330, and 300. And we're also given a blank graph or a blank chart to show our electric vehicle sales over time, where our X axis is denoted as the year starting at 2015 going to 2020. And our Y axis, the vertical axis, whereas our horizontal axis is the year, our vertical axis, the Y axis, is the vehicle sold in units of thousands, starting at 120 going up to 360 on our graph chart or chart slash graph. So, with that in mind, now that we know that we're ultimately trying to create a graph for this particular problem that summarizes our data. Our first step that we need to take is that we need to Pay attention to the X axis. So we need to note that the X axis shows the years from 2015, 2015 to 2020, 2020. And the Y axis once again shows the vehicles, the vehicles that are sold in units of thousands. Our second step now is we need to plot the following points onto our graph. Which are following points are parentheses 2015, 120, 2016, 160, 2,017,200, 2,018,360, 2,019,330. And 2,020,300, which, as you should recall, these represent our X Y coordinate layout. So our first value denotes X and our second value denotes Y. So with that in mind, our 3rd and final step is we need to plot our points on our chart and then connect them with a smooth curve with a line, and the time series plot, when we do that, will look as follows. So when we plot our points, our final graph will look as such with our points labeled, which I'll label in red. So we have 2015, 120, then we have 2016, 160, then we have 2,017,200. Then we have 2,018,360, then we have 2019. Which is 330, and finally, for 2020 we have 300. Fantastic. And then all you do is our curve is represented in blue, so we take all of our points which I plotted in red, and we connect them with a smooth curve with a line represented in blue, and that will be our final answer. Hooray, we did it. We've solved for this problem. Thank you so much for watching. Hopefully that helped, and I can't wait to see you in the next video. Bye.

Key Concepts

Time Series Data

Graphing Techniques

Trend Analysis

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