Answer:
A flat line
Explanation:
Over time if there is no movement a line would be flat. If you need more clarification please comment and I will help you. :)
Are people who drink tea, happier then others who don't,, thats the answer.
Answer:
a) Mean - 10
b) mode - 9
c) Median - 9
d) SD - 2.708
Explanation:
A) Mean is the average of a given set of number in which the sum of all the number is divided by the number of entries
Thus, mean is equal to

B) Mode is the most common number in a given series
Thus, mode is equal to 9 as it has appeared twice
C) Median
Number are arranged in ascending order
7, 8, 9, 9, 10, 12, 15
The middle number is the median i.e 9
D) Standard Deviation
Formula is square root of sum of
divided by 


Answer:
hope it's help full
and thank you for the points
The answer is chemical energy