Question 224 pts
Which of the following is true of a leptokurtic distribution?
little variablity |
the tail points to the Y axis |
the mean and the standard deviation are equal |
a great degree of variability |
Leptokurtic distribution always have a little variability and high concentration around mean.
Option A is correct.
Question 224 pts Which of the following is true of a leptokurtic distribution? little variablity the...
Question 9 Which of the following represents a platykurtic distribution? A frequency distribution histogram with the tail pointing toward the y axis A wider, flat frequency distribution histogram representing a high degree of variability A narrower frequency distribution histogram representing little variability A frequency distribution histogram with the tail pointing away from the y axis
Question 17 Which of the following represents a positively skewed distribution? A wider, flat frequency distribution histogram representing a high degree of variability A narrower frequency distribution histogram representing little variability A frequency distribution histogram with the tail pointing away from the y axis A frequency distribution histogram with the tail pointing toward the y axis
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. Which of the following statements is true about the standard deviation? A. the standard deviation is a better measure of variability when the underlying data distribution has a significant skew B. when the standard deviation is the best measure of variability, then the median is the best measure of location C. the standard deviation is a better measure of variability when comparing the variability of different distributions D. the standard deviation is a better measure of variability when the...
Which of the following is true? [i] Kurtosis is a measure of the variability [ii] Kurtosis is a measure of the peakedness of a distribution [iii] Standard deviation is a measure of location [iv] Skewness is a measure of the degree of asymmetry of a frequency distribution [v] A symmetric distribution has zero skewness [vi] Variance is the difference between the largest and smallest values of a distribution. i, ii, iii, vi ii, iii, v ii, iv, v iii, iv,...
Question 19 Which of the following is TRUE about the mean and standard deviation for the following probability distribution: X0 e 042035 0.20 i. The mean is 0.71 ii. The standard deviation is 0.85 O i only O Both i and O I only Neither i nor l
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Help with question 10 please and thank you. Question 10 14 pts Suppose X is a random variable with mean 100 and standard deviation 15. Suppose that we select random samples of size n = 81 to construct a sampling distribution of means. Then which of the following is NOT true? O The standard deviation of the sampling distribution is 15/9 The mean of the sampling distribution is 100 Given enough samples, the shape of the sampling distribution will be...