21⟩ We do not know whether the pattern of results found in our samples accurately reflects what is happening in the population or if it is the result of _____ error.
1. Distribution
2. Mean
3. Sampling
4. Confidence
Answer: sampling
Statics Probability
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“Statics Probability Interview Questions and Answers will guide us now that Statics Probability is a way of expressing knowledge or belief that an event will occur or has occurred. In mathematics the concept has been given an exact meaning in probability theory, that is used extensively in such areas of study as mathematics, statistics, finance, gambling, science, and philosophy, so learn more about Statics Probability with this Statics Probability Interview Questions with Answers guide”
23 Statics Probability Questions And Answers
22⟩ You have the IQs of a set of people. The mean of these IQs is 100. The standard deviation is 15. One student scored 90 on the test. This produced a z-score of -0.67 or -0.7 to 1 decimal place. Using the z-score table in appendix 1, what does this mean?
1. Taking the z-score to 1 decimal place the table tells us that 75.80% of people in the set would have IQ's equal to, or greater than, the student. In other words the student is not very intelligent.
2. Taking the z-score to 1 decimal place the table tells us that 75.80% of people in the set would have IQ's equal to, or lower than, the student. In other words the student is very intelligent.
3. Taking the z-score to 1 decimal place the table tells us that 24.20% of people in the set would have IQ's equal to, or greater than, the student. In other words the student is very intelligent.
4. None of the above.
Answer: Taking the z-score to 1 decimal place the table tells us that 75.80% of people in the set would have IQ's equal to, or greater than, the student. In other words the student is not very intelligent.
23⟩ The mean of a set of IQs is 100 and the standard deviation is 15. The z score for one student is +2.2 Using the necessary z-score table in appendix 1, what does this mean?
1. It tells us that the score is 2.20 standard deviations below the mean.
2. 98.61% of scores are equal to or greater than this student's score - they are not very bright.
3. Only 1.39% of scores are equal to or greater than this student's score - they are very bright.
4. 1.39% of scores are equal to or lower than this student's score - they are not very bright.
Answer: Only 1.39% of scores are equal to or greater than this student's score - they are very bright.
