13. Switch to the Subtotals worksheet. Do a multi-level sort by Institution Name, then by Type, then by Survey Year. Convert the table back to a normal range. Use the Subtotal feature to subtotal this data first by Institution Name, showing totals for all 3 violations. Then subtotal again by Type. (Hint: You will need two sets of subtotals.) Refer to Figure 4 to check your results
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