If A=30, B=20, C=50, what is the total number of observations?

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Multiple Choice

If A=30, B=20, C=50, what is the total number of observations?

Explanation:
Total observations are found by adding up the counts from all groups. Here, the groups have 30, 20, and 50 observations. So the total is 30 + 20 + 50 = 100. The other numbers aren’t the total because they don’t add all three group counts together—50 is just one group’s count, and 120 or 150 would require other values. The correct total with these values is 100.

Total observations are found by adding up the counts from all groups. Here, the groups have 30, 20, and 50 observations. So the total is 30 + 20 + 50 = 100. The other numbers aren’t the total because they don’t add all three group counts together—50 is just one group’s count, and 120 or 150 would require other values. The correct total with these values is 100.

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