Chapter 2: Q. 2.127 (page 80)
Distribution of a variable.
Short Answer
A variable's distribution is a description of the relative frequency with which each conceivable outcome will occur in a set of trials.
Chapter 2: Q. 2.127 (page 80)
Distribution of a variable.
A variable's distribution is a description of the relative frequency with which each conceivable outcome will occur in a set of trials.
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Get started for freeSleep Aids. The additional sleep, to the nearest tenth of an hour, was obtained by a sample of patients by using a particular brand of sleeping pill. In this case, decide which type of grouping (single-value, limit, or cutpoint) is probably the best.
The Fulbright Program. The U.S. government's flagship international educational exchange program, the Fulbright program, is sponsored by the Bureau of Educational and Cultural Affairs. Fulbrights are awarded based on "academic and leadership potential. providing the opportunity to exchange ideas and contribute to finding solutions to shared international concerns." For 2012-2013, the top 10 doctoral/research institutions receiving Fulbright awards are as shown in the following table. The success rate gives the number of grants per application, expressed as a percentage. Identify the type of data provided by the information in each column of the table.
We have drawn a smooth curve that represents a distribution,
a. Identify the shape of the distirbution with regard to modality.
b. Identify the shape of the distribution with regard to symmetry (or non symmetry)
c . If the distribution is unimodal and non symmetric, classify it as either right skewed or left skewed.
Suppose that you have a data set that contains a large number of observations. Which graphical display is generally preferable; a histogram or a stem-and-leaf diagram? Explain your answer.
Population distribution.
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