You are watching: If the standard deviation for a set of data is 0, which of the following must be true?
Amy is looking right into investing a part of her recent bonus right into the stock industry. While rebrowsing various companies, she discovers the complying with typical deviations of one year of everyday stock cshedding prices.a. Garden Statues Express: Standard deviation of stock prices = $9.65b. Masterful Pocketwatches: Standard deviation of stock prices = $1.05 Based on the data and also assuming these patterns proceed, which agency would certainly provide Amy a steady permanent investment?
a value that is useful in comparing information values from populations with various means and also conventional deviationsa. discrete variableb. standard deviationc. z score
which of the complying with is true? a. population estimator is computed for data from a sample b. a populace parameter is computed for information from a sample c. a point estimator is computed for information from a sample d. a point estimator is computed for information from the entire population
Z-score is additionally understand as ... a. square of the traditional deviation b. square root of the sample variance c. square of the suppose d. standardized value
Which of the following is true? a.The sum of the deviations is zero b. The amount of the square root of the deviations is zero c. The sum of the squares of the deviations is zero d. The sum of the absolute worths of the deviations is zero
Which of the following is true according to Chebyshev"s theorem?a. at leastern 1/2 of the observations should autumn within one traditional dev. b. at least 5/6 of the monitorings have to loss within three typical dev. c. at leastern 7/8 of the monitorings must autumn within 4 conventional dev. d. at least 3/4 of the observations should fall within two conventional dev.
Statistical Techniques in Business and also Economics1fifth EditionDouglas A. Lind, Samuel A. Wathen, William G. Marchal
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