Verified Answer :

The next two are: 6.2, 7
The pattern is by adding .8 to the last number

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The common difference of the data set of A is 1. While the common difference in the data set of B is 0.80

B.) 3.8 + 0.80 = 4.60
      4.6 + 0.80 = 5.40
      5.4 + 0.80 = 6.20
      6.2 + 0.80 = 7.00

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