To change y-scale type
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1    In the data source dialog box, click Scale, then click the Y-Scale Type tab.

2    Under Y-Scale Type, do one of the following:

·    Choose Frequency to change the scale type to represent frequency.

·    Choose Percent to change the scale type to represent percentages.

·    Choose Density to change the scale type to represent density. Only with histograms.

·    Choose Probability to change the scale type to represent probability. Not available with histograms.

·    Choose Score to change the scale type to represent scores. Only with probability plots.

3    If you have chosen Frequency or Percent, check Accumulate values across bins to accumulate values from left to right with each bar. Only available with histograms.

4    Click OK.