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Biostatistics Final Exam questions well answered to pass $13.99   Add to cart

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Biostatistics Final Exam questions well answered to pass

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  • Biostatistics
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  • Biostatistics

Biostatistics Final Exam questions well answered to pass

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  • October 29, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Biostatistics
  • Biostatistics
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BukayoSaka120
Biostatistics Final Exam questions well
answered to pass
Sampling error - correct answer ✔✔chance difference between an estimate and the population
parameter being estimated



Bias - correct answer ✔✔systematic discrepancy between estimates and the true population
characteristic



Random sample - correct answer ✔✔each member of a population has an equal and independent
chance of being selected



categorical data - correct answer ✔✔named characteristics of individuals that do not have magnitude on
a numerical scale



numerical - correct answer ✔✔quantitative measurements that have magnitude on a numerical scale



nominal categorical - correct answer ✔✔no order



ordinal categorical - correct answer ✔✔have order



Percentile - correct answer ✔✔specifies the percentage of observations less than or equal to it; the
remaining observations exceed it



contingency table - correct answer ✔✔gives the frequency of occurrence of all combinations of two or
more categorical variables



sample mean - correct answer ✔✔average of the measurements in the sample, the sum of all the
observations divided by number of observations

, standard deviation - correct answer ✔✔commonly used measure of the spread of a distribution;
measures how far from the mean the observations typically are



standard deviation - correct answer ✔✔measures how far from the mean the observations typically are



variance - correct answer ✔✔measure of spread; standard deviation is the square root of the variance



IQR - correct answer ✔✔3rd quartile- 1st quartile



A box plot is especially useful when comparing - correct answer ✔✔more than one distribution



The ______ (mean or median) is the middle measurement of a distribution. - correct answer ✔✔median



The______ (mean or median) is the center of gravity - correct answer ✔✔mean



The ______ (standard deviation or IQR) is a better indicator of the spread of the main part of a
distribution than the standard deviation when the data are strongly skewed to one side or the other,
especially when there are extreme observations - correct answer ✔✔Interquartile range



The ______ (std or IQR) is a better indication of the spread among all of the data points - correct answer
✔✔standard deviation



Mutually Exclusive - correct answer ✔✔when two events are not simultaneously possible; Pr[A and B]=0



probability distribution - correct answer ✔✔a list of the probabilities of all mutually exclusive outcomes
of a random trial



Addition rule of probability for mutually exclusive events - correct answer ✔✔If two events A and B are
mutually exclusive, then

Pr[A or B]= Pr[A] + Pr[B]

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