Histograms, Frequency Polygons, and Time Series Graphs · Example 3

The following data shows the Annual Consumer Price Index, each month, for ten years. Construct a time series graph for the Annual Consumer Price Index data only.

$$\begin{array}{cccccccc}\text{Year}& \text{Jan}& \text{Feb}& \text{Mar}& \text{Apr}& \text{May}& \text{Jun}& \text{Jul}\\ \text{1}& \text{181.7}& \text{183.1}& \text{184.2}& \text{183.8}& \text{183.5}& \text{183.7}& \text{183.9}\\ \text{2}& \text{185.2}& \text{186.2}& \text{187.4}& \text{188.0}& \text{189.1}& \text{189.7}& \text{189.4}\\ \text{3}& \text{190.7}& \text{191.8}& \text{193.3}& \text{194.6}& \text{194.4}& \text{194.5}& \text{195.4}\\ \text{4}& \text{198.3}& \text{198.7}& \text{199.8}& \text{201.5}& \text{202.5}& \text{202.9}& \text{203.5}\\ \text{5}& \text{202.416}& \text{203.499}& \text{205.352}& \text{206.686}& \text{207.949}& \text{208.352}& \text{208.299}\\ \text{6}& \text{211.080}& \text{211.693}& \text{213.528}& \text{214.823}& \text{216.632}& \text{218.815}& \text{219.964}\\ \text{7}& \text{211.143}& \text{212.193}& \text{212.709}& \text{213.240}& \text{213.856}& \text{215.693}& \text{215.351}\\ \text{8}& \text{216.687}& \text{216.741}& \text{217.631}& \text{218.009}& \text{218.178}& \text{217.965}& \text{218.011}\\ \text{9}& \text{220.223}& \text{221.309}& \text{223.467}& \text{224.906}& \text{225.964}& \text{225.722}& \text{225.922}\\ \text{10}& \text{226.665}& \text{227.663}& \text{229.392}& \text{230.085}& \text{229.815}& \text{229.478}& \text{229.104}\end{array}$$

$$\begin{array}{ccccccc}\text{Year}& \text{Aug}& \text{Sep}& \text{Oct}& \text{Nov}& \text{Dec}& \text{Annual}\\ \text{1}& \text{184.6}& \text{185.2}& \text{185.0}& \text{184.5}& \text{184.3}& \text{184.0}\\ \text{2}& \text{189.5}& \text{189.9}& \text{190.9}& \text{191.0}& \text{190.3}& \text{188.9}\\ \text{3}& \text{196.4}& \text{198.8}& \text{199.2}& \text{197.6}& \text{196.8}& \text{195.3}\\ \text{4}& \text{203.9}& \text{202.9}& \text{201.8}& \text{201.5}& \text{201.8}& \text{201.6}\\ \text{5}& \text{207.917}& \text{208.490}& \text{208.936}& \text{210.177}& \text{210.036}& \text{207.342}\\ \text{6}& \text{219.086}& \text{218.783}& \text{216.573}& \text{212.425}& \text{210.228}& \text{215.303}\\ \text{7}& \text{215.834}& \text{215.969}& \text{216.177}& \text{216.330}& \text{215.949}& \text{214.537}\\ \text{8}& \text{218.312}& \text{218.439}& \text{218.711}& \text{218.803}& \text{219.179}& \text{218.056}\\ \text{9}& \text{226.545}& \text{226.889}& \text{226.421}& \text{226.230}& \text{225.672}& \text{224.939}\\ \text{10}& \text{230.379}& \text{231.407}& \text{231.317}& \text{230.221}& \text{229.601}& \text{229.594}\end{array}$$

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Introductory Statistics 2e · §2.2 Histograms, Frequency Polygons, and Time Series Graphs · Example 3