TABLE 14-11
a Logistic Regression Model Was Estimated

question 180

True/False

TABLE 14-11
A logistic regression model was estimated in order to predict the probability that a randomly chosen university or college would be a private university using information on average total Scholastic Aptitude Test score (SAT) at the university or college, the room and board expense measured in thousands of dollars (Room/Brd), and whether the TOEFL criterion is at least 550 (Toefl550 = 1 if yes, 0 otherwise.) The dependent variable, Y, is school type (Type = 1 if private and 0 otherwise).
The Minitab output is given below:
Logistic Regression Table
$\begin{array}{lrrrrrrr} & & & && \text { Odds } & \text { 95: CI } \\\text { Predictor } & {\text { Coef }} & \text { SE Coef } & Z &{\text { P }} & \text { Ratio } & \text { Lower } & \text { Upper } \\\text { Constant } &-27.118&6 .696& -4.05 & 0.000 & & & \\\text { SAT } & 0.015 & 0.004666 & 3.17 & 0.002 & 1.01 & 1.01 & 1.02 \\\text { Toefl550 } & -0.390 & 0.9538 & -0.41 & 0.682 & 0.68 & 0.10 & 4.39 \\\text { Room/Brd } & 2.078 & 0.5076 & 4.09 & 0.000 & 7.99 & 2.95 & 21.60\end{array}$

Log-Likelihood = -21.883
Test that all slopes are zero: G = 62.083, DF = 3, P-Value = 0.000
Goodness-of-Fit Tests

$\begin{array}{lrcr}\text { Method } & \text { Chi-Square } & \text { DF } & \text { P } \\ \text { Pearson } & 143.551 & 76 & 0.000 \\ \text { Deviance } & 43.767 & 76 & 0.999 \\ \text { Hosmer-Lemeshow } & 15.731 & 8 & 0.046\end{array}$

-Referring to Table 14-11, there is not enough evidence to conclude that the model is not a good-fitting model at a 0.05 level of significance.

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Schizophrenia

One of the most serious psychological disorders, characterized by delusions, hallucinations, and disorganized speech. There are overall, adverse changes in thought, perception, emotion, and motor behaviour, and a feeling of depersonalization. Behaviour in some instances appears to be “autistic,” in the sense of being governed by internal stimuli or private events. The individual may be unresponsive to environmental stimuli that would normally prompt reactions, or may respond in a way that suggests a distorted interpretation of the stimuli. Ordinary objects or events seem to take on a marked personal significance. There is pronounced disruption of cognitive transactions: thought and language appear to become loosened from the normal constraints that make for coherent sequences of ideas and distinguish fantasy from reality. Often, some notion or theme involving malevolent forces or inordinate personal power increasingly commands the individual’s attention. Many people with schizophrenia appear to lose their intensity. Language may become impoverished, with little apparent effort or success at communication. They may become withdrawn socially and exhibit little interest in formerly enjoyable pursuits. Attention span may be markedly reduced. From the Greek schizein, “to split,” and phrenos, “mind.”