Negative z tables normal distributions
[DOC File]Topic 15:
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Determine the z-score such that the area under a normal curve between it and its negative is 0.5000. Then, subtract these two z-scores to find the interquartile range of a normal distribution. Recall that the outlier rule of Topic 6 identified as an outlier any observation falling …
[DOC File]CHAPTER 5 AND 6—FAMILIES OF RANDOM VARIABLES
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A Standard Normal is a Normal Distribution with a mean of 0 and a standard deviation of 1. We usually use Z to denote the Standard Normal, N(0,1). 3. The Standard Normal Table is a table with the probabilities of Z given for various values of Pr{ Z < z } for values of z from –3.49 to +3.49. For example: Pr { Z < -2 } = Pr { Z < +2 } = Pr { Z ...
[DOC File]Chapter 3: Common Distributions
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In this chapter we examine four of the distributions that will be frequently encountered later in the course. 5.1 The Normal Distribution. The normal distribution is the most widely used distribution in statistics. Continuous data such as mass, length, etc, can often be modelled using a normal distribution.
[DOCX File]Year 12 Mathematics Standard 2 – MS-S5 The Normal …
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a negative z-score is below the mean. ... Normal distribution tables would be used to answer this question. ... Lead students to the idea of standardising the distributions, through z-scores, to compare fairly. Class A: z= 91-93 2 =-1 . Class B: z= 82-86 5 =-0.8 . Understanding the empirical rule
[DOC File]THE NORMAL DISTRIBUTION - Mathematics with Mr Walters
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THE STANDARD NORMAL DISTRIBUTION. This has mean value 0 and variance 1. It is represented by the letter Z. Φ (z) = P (Z < z) this is the Cumulative Distribution Function (Φ = Phi pronounced “fie”) The table on p 201 gives the values of the Normal Distribution Function HOW TO READ THE TABLES. Always use a sketch. Examples. 1) P (Z < 0.72)
[DOC File]Chapter 1
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z = (raw score – mean score) ( standard deviation. For example, if you scored 70 on a test that has a mean of 60 and a standard deviation of 20, your z-score would be: z = (70 – 60) ( 20. z = 10 ( 20. z = 0.5. A positive z-score indicates an above average score, whereas a negative z …
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