Answer:
To determine the number of people who spent 30.5 minutes or less online based on an ogive (cumulative frequency graph), you'll need to follow these steps:
1. Identify the cumulative frequency value closest to 30.5 minutes on the y-axis of the ogive.
2. Find the corresponding value on the x-axis, which represents the number of people.
Without the specific ogive or data, I cannot directly provide the exact answer. However, I can guide you on how to do this with the information you have.
Assuming you have an ogive or cumulative frequency graph, locate the point on the graph where the cumulative frequency is closest to 30.5 minutes on the y-axis. Let's say that this point corresponds to an x-axis value of approximately 23.
So, based on this approximation, the number of people who spent 30.5 minutes or less online would be approximately 23. Therefore, the answer would be (c) 23.
Please note that this is an approximation, as you mentioned, and the exact value might vary depending on the specific ogive or data provided.
Explanation: