what distribution is referred to as approximately symmetric

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orchestra answered 1 year ago

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Suppose that the distribution of scores on an exam is mound shaped and approximately symmetric. The...

Suppose that the distribution of scores on an exam is mound shaped and approximately symmetric. The exam scores have a mean of 110 and the 16th percentile is 85. (Use the Empirical Rule.) (a) What is the 84th percentile? (b) What is the approximate value of the standard deviation of exam scores? (c) What is the z-score for an exam score of 90? (d) What percentile corresponds to an exam score of 160? % (e) Do you think there were...

1. Suppose that the distribution of scores on an exam is mound shaped and approximately symmetric....

1. Suppose that the distribution of scores on an exam is mound shaped and approximately symmetric. The exam scores have a mean of 110 and the 16th percentile is 85. a. What is the 84th percentile? b. What is the approximate value of the standard deviation of exam scores? c. What is the z-score for an exam score of 90? d. What percentile corresponds to an exam score of 160? e. Do you think there were many scores below 35?...

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A SYMMETRIC distribution with TWO parameters. A SYMMETRIC distribution with ONE parameter used when the population...

A SYMMETRIC distribution with TWO parameters. A SYMMETRIC distribution with ONE parameter used when the population standard deviation is unknown. A NORMAL distribution with mean 0 and standard deviation 1. The distribution of a sample statistic. Gives the NORMALITY of sample means for large sample. Using data to determine properties of population parameters. A single value used to estimate a population parameter. A z-score determined by the probability (1-Confidence Level/100)/2 t-distribution PARAMETER equal to n-1, where n the the sample...

What is a SYMMETRIC versus SKEWED DISTRIBUTION, give an example?

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The distribution of the heights of the first grade students is mound – shaped and symmetric with the mean height of 140 cm and standard deviation of 5 cm. According Empirical rule What % of heights is between 125 and 155 cm What % of heights is between 135 and 150 cm What % of heights is less than 130 cm What % of heights is less than 130 cm

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For the following data sets, are the samples positively skewed, negatively skewed or approximately symmetric? (You can use R to justify your answer.) (a) A = {0.9961905,0.9493184,0.8332006,0.9513567,0.9856061,0.9136707,0.9706223, 0.6834221, 0.8527071, 0.8052218, 0.9798628, 0.9862662}. (b) B = {0.256907054,0.371948965,0.302661234,0.245459145,0.488603820,0.435416721, 0.203228122, 0.004436282, 0.115262446, 0.058988085, 0.256066243, 0.141507075}. (c) C = {0.139061819,0.025883617,0.096332657,0.115620817,0.274004925,0.059080122, 0.072580116, 0.008576388, 0.068673036, 0.379232748, 0.117313230, 0.086692960}.

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