Unit 23 : Measures of Central tendency and dispersion

99.4 97.7 94.7 92.1 Calculate the average consumer price index B: a) For the first 4 years, (1997 – 2000). b) For the next 3 years, (2001 – 2003) c) For all 7 years . d) Suppose the original data was lost, and only the 4- and 3-year averages in a) and b) were available. Would it still be possible to calculate the overall 7-year average? How? ................
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