Measures of Cen...

Priya jogged for a total of $$30$$ minutes. Her average speed for the first $$10$$ minutes was $$5$$ miles per hour. During the last 20 minutes, she jogged $$2.5$$ miles. What was the average speed of her entire jog?

The average (arithmetic mean) of all the grades on a certain algebra test was $$90$$. If the average of the $$8$$ males grades was $$87$$, and the average of the females grades was $$92$$, calculate the number of female students.

Find the arithmetic mean of $$\dfrac {1}{2}, \dfrac {1}{3}, 2n$$ and $$m$$.

$$M$$ is a set consisting of a finite number of consecutive integers. If the median of the numbers in set $$M$$ is equal to one of the numbers in set $$M$$, which of the following must be true?
$$I.$$ The average (arithmetic mean) of the numbers in set $$M$$ equals the median.
$$II.$$ The number of numbers in set $$M$$ is odd.
$$III.$$ The sum of the smallest number and the largest number in set $$M$$ is even

What is the weighted arithmetic mean of the first $$n$$ natural numbers whose weights are equal to the corresponding numbers?

A sample of $$25$$ scores has a mean $$75$$, median $$79$$ and standard deviation of $$8$$. If you increase every score by $$10$$, which of the following is true?
$$I$$. The new mean is $$85$$
$$II$$. The new median is $$89$$
$$III$$. The new standard deviation is $$18$$

Brian got grades of $$92,89$$ and $$86$$ on his first three math tests. What grade must he get on his final test to have an overall average of $$90$$?

The sum of four consecutive odd integers $$w, x, y,$$ and $$z$$ is $$24$$. What is the median of the set $$\left \{w, x, y, z, 24\right \}$$?

X, Y, Z are three sets of values.
Which of the following statements is true?

The table below shows the number of cars Jing sold each month last year. What is the median of the data in the table?