Answer 169
This is because 13x13=169
Answer:
The two groups collected 573.
Step-by-step explanation:
238
+345
=
573
Yes it does, the number of wheels is dependent on the number cars, and each number of wheels will only correspond to one number of cars.
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.