Consider the following data: −6,−1,−6,7,−1,−1,−6−6,−1,−6,7,−1,−1,−6 Copy Data Step 1 of 3 :   Calculate the value of the sample variance. Round your answer to one decimal place.

Find the coefficient of x2y3z3 in the expansion of(x + y + z)8.

A rectangle is a four-sided figure that has two sets of parallel sides, so that we have two sides of one length and two sides of another length; a square is just a special case of a rectangle in which all four sides are the same length. Therefore, the procedure for calculating area is the same no matter whether we are dealing with a rectangle or a square. The area of a rectangle is calculated as follows: Area = base x height = b × h In this formula, the base is the width of the rectangle and the height is simply how tall the rectangle Is. For example, if we have a rectangle that is 20 centimeters wide and 10 centimeters tall, its area can be calculated as follows: Area = 20 cm x 10 cm = 200 cm² Note the superscript '2' In our answer; this is because we have multiplied centimeters by centimeters. In economics, we are more likely to be dealing with quantities bought or sold and prices, so don't worry about it too much for our discussion. The area of a triangle A triangle is really just a…

The fitted values and residuals have the following properties: a. the sample of the average of the residuals is zero b. the sample covariance between each independent variable and the OLS residual is zero c. the sample covariance between the OLS fitted value and the OLS residual is zero d. All of the above is correct ○ a. a O b. b О с. с O d. d

Suppose the amount of change IWU students carry is exponentially distributed with a mean of $0.88. Suppose that we randomly pick 25 IWU students and learn how much change they have. What type of distribution does the population, which is the change carried by IWU students, follow? What are the mean and standard deviation of the population? (6 points)           What type of distribution does the sample mean follow? What are the mean and standard deviation of the sample mean? (6 points)           Find the probability that the average change of 25 IWU students was between $0.80 and $1.00. Graph the situation, shade in the area to be determined, and find the probability. (6 points)

If x; and y; are positively correlated in the sample then the estimated slope is a. equal to zero b. greater than zero c. less than zero d. equal to one

A 30-team league had HACT = 0.2!6 and a theoretical maximum of HMAX= 0.36 . Calculate the normalised variance and briefly comment on whether the league is more competitive or uncompetitive.

A rectangle is a four-sided figure that has two sets of parallel sides, so that we have two sides of one length and two sides of another length; a square is just a special case of a rectangle in which all four sides are the same length. Therefore, the procedure for calculating area is the same no matter whether we are dealing with a rectangle or a square. The area of a rectangle is calculated as follows: Area = base x height = b × h In this formula, the base is the width of the rectangle and the height is simply how tall the rectangle Is. For example, if we have a rectangle that is 20 centimeters wide and 10 centimeters tall, its area can be calculated as follows: Area = 20 cm x 10 cm = 200 cm² Note the superscript '2' In our answer; this is because we have multiplied centimeters by centimeters. In economics, we are more likely to be dealing with quantities bought or sold and prices, so don't worry about it too much for our discussion. The area of a triangle A triangle is really just a…