Answer: A. 6.5
Step-by-step explanation:
Here, the given set = { 15, 19 3, 12, 17, 2, 2, 8}
Mean,
Number of elements, n = 8
Thus, the standard deviation,
⇒ Option A is correct.
Suppose we have a bottomless bag of 3 different kinds of balls: blue, green, and red. How many possibilities are there to choose
1 answer:
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It took him 2.6 hours to reach the top
Data;
- Uphill = 6km
- Downhill = 4km
- Total time taken = 8 hours
Let us calculate the speed during uphill and downhill
Since the time it took them to descend is twice the time it took them to ascend,
- Let x represent the time taken to ascend
From the calculation above, it took him 2.6 hours to reach the top.
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