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Biostatistics Final Exam (NYU) with 100% correct answers
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Biostatistics Final Exam (NYU) with 100% correct answers
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Biostatistics Final Exam (NYU) with100% correct answers
a sample of 120 employees of a company is selected, and the average age is found to be 37 y/o... -
correct answer ✔✔Statistic
after taking the first exam, 15 of the students dropped the class - correct answer ✔✔parameter
the number of limbs of a 2-year-old tree is 21 - correct answer ✔✔discrete
the height of a 2 y/o maple tree is 28.3 ft - correct answer ✔✔continuous
survey responses of "good, better, best" - correct answer ✔✔ordinal
the body top of eight different giant pandas - correct answer ✔✔interval
the eye color of college students - correct answer ✔✔nominal
the weight of rats (g) in a research project - correct answer ✔✔ratio
use the Sturges' rule as a guide line to find the ideal number of classes when the number of data values
is 148 (log_10 148=2.17) - correct answer ✔✔8
if the standard deviation of a set of data is zero what can you conclude about the set of values - correct
answer ✔✔all values are identical
a sample data set has a mean of 57 and a SD of 11. which of the following sample measurements is most
likely an outlier
a- 26
, b-66
c-72
d-98 - correct answer ✔✔d-98
quartile 3 is the same as the median - correct answer ✔✔false
what is the chance that a fetus will be female
a-0.5
b-0.75
c-0.25
d- cannot be determined - correct answer ✔✔d- cannot be determined
can the SD for a data be negative - correct answer ✔✔no SD is calculation of variability it cannot be
negative
does SD change if the sample size increases? - correct answer ✔✔it depends on the sample
if a sample size is 1 (n=1) could we calculate standard deviation - correct answer ✔✔no, SD is a
calculation of variability, so it cannot be calculated for a single value
normalized data is valuable even when the 0 and 100% are not clearly defined - correct answer ✔✔false
can the mean and median of data equal to zero or negative values - correct answer ✔✔yes, they can
have any value
In a normally distributed data _________% of the population lies within the 1 SD of the mean from both
sides.
a-65
b-68
c-95
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