Answered: Circle the correct answer for each…

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 20PFA

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Question

Circle the correct answer for each question and give a one-line explanation for each:

a) For the normal density curve, the median is (greater than, equal to, less than) the mean.

b) Even if two values are from different normal distributions, we still can compare them by
using Z-scores. (True, False)

c) In skewed distributions the standard score of the mean might be different than 0. (True, False)

d) For a normal distribution, IQR is less than 2 times the standard deviation. (True, False)

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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