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1 answer:
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Answer:
The correct statements are: B and D.
Step-by-step explanation:
Standard deviation is one of the measure of dispersion or spread of a dataset from the average value of the dataset. The standard deviation measures the variability of the distribution of values.
The higher the spread or variability in the data set, the greater is the standard deviation value and thus greater will be the magnitude of the deviance of the value from their average.
Then the standard deviation (S.D.) is given by,
The correct statements are:
B. It is a measure of variability.
D. It is calculated using the mean.
Answer:
Jason originally had 87 baseball trading cards.
Step-by-step explanation:
Let the number of cards Jason originally had be, <em>x</em>.
It is provided that he bought 5 new baseball trading cards to add to his new collection.
So, the new number of cards is, <em>x </em>+ 5.
It is also provided that, his dog ate half of the cards.
Now Jason has 46 cards left.
This implies that:
Solve the above equation of <em>x</em> as follows:
Thus, Jason originally had 87 baseball trading cards.