Answer:
5
Step-by-step explanation:
mean = sum of all values÷number of observation
= 3+7+5+6+4 ÷ 5
= 5
Answer:
D
Step-by-step explanation:
Mean tells us the average (in this case, total marks/ total number of students).
Standard deviation tells us the spread of a set of data from its mean (how much it deviates from the mean).
Thus, standard deviation can be used to determine the consistency of a data. <u>The smaller the standard deviation, the more consistent the data is</u>.
Since 4S has the smallest standard deviation of 1, it shows the most consistent achievement in the test.
The answer is the last one. The main goal is to get the initial velocity alone, and by solving that treat it like your solving an equation. I showed the process of how I got the answer attached. But if you want me to explain it, I am glad to do it.
Answer:
77
Step-by-step explanation:
3+2*49-24
3+98-24
101-24
77
Good luck