Answered: A wider standard curve is due to:…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

.A wider standard curve is due to:

Lower mean
Higher standard deviation
Lower standard deviation
Higher mean

Which of the following is the standard deviation of the standard normal distribution?

1
1/2
0
None of these

This refers to measurement that describes a sample.

Statistic
Mean
Parameter
Statistics

Consider a positive number a. Which respect to the standard normal distribution, which of the following is true?

None of these
P(z<a) increases as a increases.
P(z>a) decreases as a decreases.
P(z>a) increases as a increases.

Which of the following is true about the standard deviation of a sampling distribution of means derived from a population as the sample size gets larger?

It becomes larger as well.
None of these
It becomes smaller.
It depends on the value of the population mean

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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