Scatter Will Not Use Given X-values In Plotting Data?

I'm trying to make a scatter plot from two columns of data; the first, a series of decimals between 0 and 1, the second, a series of percentages between -40 and 140%. Essentially, I'm charting a performance (%) vs. a 'batting average' (decimal between 0 and 1).

However, when I plot these data points, the x-values the chart takes are, I suppose, the relative position of the data within the column (i.e., 5, 9, 32) as opposed to the actual values (.33, .71, .92, etc). I've tried manually selecting the data, copying only the values into different cells...nothing seems to work. Each time, I get points like (11, 61%) instead of the desired (.48, 61%).