Answer:
A
Step-by-step explanation:
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.
To turn a fraction into a decimal you have to divide the numerator by the denominator. For example: 6/7 into a decimal would be 1.16666667 because 7 / 6 = <span>1.16666667
Hope I helped!
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