NAT I General Science Statistics With Answers

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NAT I General Science Statistics

Sr. # Questions Answers Choice
1 The standard deviation of any sampling distn is called Sampling error Non-sampling error Standard error Type 1 error
2 If E(q̂) = q then q̂ is called Biased estimator Unbiased estimator Positively biased Negatively biased
3 A numerical value computed from sample is called: Parameter Sampling unit Sampling design Statistic
4 The shape of the normal distribution is: Leptokurtic Mesokurtic Platykurtic Skewed
5 The formula used to estimate a parameter is called: Estimate Estimation Bais Estimator
6 In a 2 x 2 contingency table degrees of freedom is: 4 2 1 8
7 When the two variables are uncorrelated the value of r is -1 0 +1 None of these
8 A set of instruction that run the computer are: Hardware Printers Monitors Software
9 Movement in secular trend Smooth Steady Regular All
10 Two attributes are independent if (AB) = (A)(B) / N (AB) <sup>1</sup> (A)(B) / N (AB) &gt; (A)(B) / N (AB) &lt; (A)(B) / N
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