Directions: Read and understand cach question carefully Choose the letter of the best answer then write it on the space provided 1 What measure should you use to determine what most likely be the probability of an event to happen? A Variance of discrete random vanable B. Mean of discrete random variable C. Simple Variance D. Simple Mean 2) What measure should you use to determine how far or close the probability of events from the center or the incan? A Variance of discrete random variable B. Mean of discrete random variable C Simple Variance D. Simple Mean 31 What do you call the weighted average of the possible values that a random variable can take? A Variance of discrete random variable C. Simple Variance B. Mean of discrete random variable D Simple Mean 4) Which tells us how much we can expect results to deviate from expected value? A. Variance of discrete random variable C Simple Variance T. Mean of discrete random variable D Siruple Mean 5) Which of the following statements is a description of low variance? A. The probability of scores is almost the same as the mean B. The data are close to the mean. C Both statements A and 19 D. None of the above 6) Which of the following statements is a description of high variance? A. The probability of scores is almost the same as the mean B. The probability of scores is scattered around the mean. C The data are closed to the mean. D. All the above

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 29PFA

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Directions: Read and understand cach question carefully Choose the letter of the best answer then write it on the space provided 1 What measure should you use to determine what most likely be the probability of an event to happen? A Variance of discrete random vanable B. Mean of discrete random variable C. Simple Variance D. Simple Mean 2) What measure should you use to determine how far or close the probability of events from the center or the incan? A Variance of discrete random variable B. Mean of discrete random variable C Simple Variance D. Simple Mean 31 What do you call the weighted average of the possible values that a random variable can take? A Variance of discrete random variable C. Simple Variance B. Mean of discrete random variable D Simple Mean 4) Which tells us how much we can expect results to deviate from expected value? A. Variance of discrete random variable C Simple Variance T. Mean of discrete random variable D Siruple Mean 5) Which of the following statements is a description of low variance? A. The probability of scores is almost the same as the mean B. The data are close to the mean. C Both statements A and 19 D. None of the above 6) Which of the following statements is a description of high variance? A. The probability of scores is almost the same as the mean B. The probability of scores is scattered around the mean. C The data are closed to the mean. D. All the above

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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