Median(middle,center) data value must be arranged in numeric order.
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You can find the rule to this sequence fairly easily. Take the last number (37) and subtract the second-to-last number (25) from it. That gives you 12. Next, take 25 and subtract 18 from it, which equals 7. Lastly, take 18 and subtract 11 from it, which equals 7. Therefore, the sequence is arithmetic.
The rule would be +7, +7, +12
Finding the rule involves taking one number and subtracting the number before it in order to find the difference between the two numbers, or how the sequence changes.
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It would just be the tot foot time the cost
7.5 X 0.50 = $3.75
If we would using mental math, we would estimate the washing dishes to 20 minutes, and cleaning 40 min,
together 20+40 min
is 60 minutes, aprox 1 hour
Shelly spent almost 1 hour cleaning