Which of the following is an appropriate explanation for why a combo chart with two Y axes should be used? Responses when comparing two data series where the range is almost identical when comparing two data series where the range is almost identical when there is a vast difference in the range between two data series when there is a vast difference in the range between two data series when comparing only two data series when comparing only two data series when comparing two data series where it is known that the correlation is greater than zero