Name the measurement first
Keep the original chart visible, including its title, legend, dates, and source note. Ask what one point or bar represents. Is it a count, a percentage, an average, or a cumulative total? Those are different quantities, even when the shapes look similar. If the unit is missing, that is the first question to resolve.
Rayito can use the visible screen context to explain the chart and annotate the relevant region. It does not automatically know how the underlying dataset was collected. Ask it to distinguish readable labels from assumptions, especially when a screenshot cuts off the source or the axis.
Make one comparison at a time
The diagram above uses invented values to show why an axis matters. Both views describe a rise from 92 to 101. The left view emphasizes variation near 100; the right gives the change more absolute context. Neither picture alone tells you whether that difference matters for your decision.
First compare the endpoints. Then look at the values between them. A total increase and a steady increase are different stories. A small annotation around a dip can be more useful than coloring every point, because it directs attention to the exception the headline may have skipped.
Trace the claim back to the picture
Suppose a dashboard says a new process improved response time. Highlight the date the process changed and compare the periods on each side. Check whether the same unit and population appear throughout. A line dropping after that date is a visible observation; claiming the process caused the drop needs additional evidence.
Ask for a short explanation tied to each mark. Let the first annotation identify the scale, the next isolate the comparison, and the next expose the unanswered question. A staged walkthrough leaves room to disagree with an interpretation before several assumptions accumulate.
Keep missing information visible
A smooth average can hide variation between groups. A percentage without its denominator can hide a small sample. If error bars or confidence intervals are present, ask what the chart says they represent. Do not let an assistant invent uncertainty estimates when the source has not supplied them.
For an important report, check the source table or methodology yourself. Rayito is useful for making the visible reasoning easier to inspect; it does not turn an unattributed chart into verified research. An honest answer may be that the screen does not contain enough information.
Try it on a chart you already have
Open a chart with its labels readable and begin with a question about the conclusion you are considering. You do not need to specify circles, arrows, or colors. Ask for the reasoning; the visual should serve the comparison.
After the walkthrough, describe the chart in one sentence without using the headline. If your sentence needs a qualification, keep it. That qualification is often the most useful result of the exercise.
A question to try“What can I reasonably conclude from this chart? Walk me through the evidence and point out what it does not show.”