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Burning Candle


Candle manufacturer companies advertise that their products are better quality and has the longest mean burning time. John decides to select same size candles from three different companies-Bright Candle, Fire Candle, and Shiny Candle- and do an experiment with 15-candle in order to test which company has a better product. He recorded the number of minutes that each candle burned.
 

  Bright Candle Fire Candle Shiny Candle
1 60 66 68
2 49 68 65
3 58 56 44
4 57 59 59
5 61 61 51
6 53 64 60
7 57 53 61
8 60 51 63
9 61 60 49
10 62 50 56
11 60 64 59
12 56 60 62
13 61 60 64
14 59 51 57
15 58 49 54


Judging from the table, which brand of candle would you recommend to John?

(Adopted from riverdeep.net)



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