lines in line chart do not show up

[martinson]

I used this chart the last 2 years and it worked fine. This year, I made a
new chart based off the old chart and now the lines don't show up. The
markers are there, but the lines are not. Anyone else have this problem?>

 

[Jon Peltier]

Are there blanks in your data range? Select the chart, go to Tools menu >
Options > Chart tab, and check Interpolated for how you want blank cells to
be treated.

- Jon