17) What is the mean of observations 2, 4, 7,8,9?
(A) 9 (B) 3 (c) 30
(D) 6
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2
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Observation is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the perception and recording of data via the use of scientific instruments
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12
Answer:
add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
2+4+7+8+9 = 30
number = 5
30/5
6
hence, the mean of 2,4,7,8,9 is 6 option (D).
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