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- ii) Suppose that you find out that you have an OLS estimator which is unbiased but has a non-minimum variance. Discuss two practical steps that you take to reduce the variance of your OLS estimator. Explain your reasoning.In your own words, describe what the difference is between an error term and a residual. How does sample size affect the variance of each?1) In the method,two independent variable are assumed to have; a)Low collinearity b)High collinearity c)No collinearity d)Perfect collinearity 2) If variance of coefficient cannot be applied, we cannot conduct test for; a) Correlation b) Determination c)Significant d) Residual term
- QDX= -2PX + 0,5PY - 0,2PZ + 1,2I determine the relationship between two products X and YASAP Exercise 7-48 (Algo) (LO7-3) According to a government study among adults in the 25- to 34-year age group, the mean amount spent per year on reading and entertainment is $2,125. Assume that the distribution of the amounts spent follows the normal distribution with a standard deviation of $439. (Round your z-score computation to 2 decimal places and final answers to 2 decimal places.) a. What percent of the adults spend more than $2,400 per year on reading and entertainment? b. What percent spend between $2,400 and $3,400 per year on reading and entertainment? c. What percent spend less than $1,000 per year on reading and entertainment?The covariance by itself is not very useful because ___________.
- 19 The mean of z-scores in a data set a is zero only when the x-values are balanced around the mean of x. b is greater than zero for data sets that have large outlying values. c is always equal to one. d is always equal to zeroHow would you describe a correlation of -1? Group of answer choices There is a perfect linear relationship between x and y. There is a strong positive relationship between x and y. There is no relationship between x and y. There is a weak negative relationship between x and y. thanksConsider the following formula: y i - ( β 0 ^ + β 1 ^ x i ) . What does this formula describe? OLS slope estimator Error term Causal effect of x on y residual
- SCCoast, an Internet provider in the Southeast, developed the following frequency distribution on the age of Internet users. Find the mean and the standard deviation. (Round squared deviations to nearest whole number and final answer to 2 decimal places.) Age (years) Frequency 10 up to 20 3 20 up to 30 7 30 up to 40 18 40 up to 50 20 50 up to 60 12This is for exercises. a. Interpret the data.G. Thumb, the leading salesperson for the Moe D. Lawn Landscaping Company, turned in the following summary of sales for the week of October 23–28: Date No. of Clients Oct. 23 13 Oct. 24 8 Oct. 25 10 Oct. 26 15 Oct. 27 10 Oct. 28 22 Find the mean, median, and mode. (If an answer does not exist, enter DNE.) mean clients median clients mode clients