Question: Treat the 10 measurements from each decade as a sample and construct an x chart. What does the result suggest? Refer to the following annual

Treat the 10 measurements from each decade as a sample and construct an x chart. What does the result suggest?
Refer to the following annual temperatures (°C) of the earth for each of the past 50 years. The last two columns list statistics for the five different decades.
Treat the 10 measurements from each decade as a sample

x Range 1960s 13.98 14.10 14.05 14.03 13.65 13.75 13.93 13.98 13.91 14.00 13.938 0.450 1970s 14.04 13.90 13.95 14.18 13.94 13.98 13.79 14.16 14.07 14.13 14.014 0.390 1980s 14.27 14.40 14.10 14.34 14.16 14.13 14.19 14.35 14.42 14.28 14.264 0.320 1990s 14.49 14.44 14.16 14.18 14.31 14.47 14.36 14.40 14.71 14.44 14.396 0.550 2000s 14.41 14.56 14.70 14.64 14.60 14.77 14.64 14.66 14.68 14.70 14.636 0.360

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