ICS Part 2 Statistics Chapter 15 Online Test With Answers

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ICS Part 2 Statistics Chapter 15 Online Test

Sr. # Questions Answers Choice
1 6Σd<sub>1</sub> 5Σd<sup>1</sup> <br>
2 Φ<sup>2</sup> q<sup>2</sup> α<sup>2</sup> β<sup>2</sup>
3 C= ------------------------------
4 The two attributes A and B are negatively associated if
5 independent positively associated negatively associated correlated
6 The sample size n is reasonably large so that for each cell, the estimated expected frequency must be at least 2 3 4 5
7 When the expected frequencies are very small the value of=χ2has been adjusted omitted changed all of these
8 If any ultimate class frequency is negative the data will be inconsistent consistent correlated composite
9 The critical region of=χ2distribution is χ2 &lt;χ2v; 1-α χ2 &lt;χ2v;1-α χ2 &lt;χ2 v;1-α/2 χ2 &lt;χ2v;1-α/2
10 The value of coefficient of association lies between 0 and + 1 -1 and + 1 -1 and 0 -0.5 and + 0.5
11 (α) = (αB) + ------------------ (Aβ) (AB) (αβ) (A)
12 n = (A) + -------------------- (B) (α) (β) (A)
13 (AB), (Aβ), (αB), (αβ) are called positive class frequencies negative class frequencies natural class frequencies ultimate class frequencies
14 The degree of relationship between the two attributes is called regressor correlation regressand association
15 Degree of linear relationship between two variables is called regression association correlation disassociation
16 A process of dividing the objects into two mutually exclusive classes of an attribute is called classification trichotomy dichotomy association
17 A characteristic which varies in quality form one individual to another is called variable constant attribute none of these
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