Biostatistics Final Exam (NYU)
Questions & Answers10
a sample of 120 employees of a company is selected, and the average age is found to be 37
y/o... - ANSWERS-Statistic
after taking the first exam, 15 of the students dropped the class - ANSWERS-parameter
the number of limbs of a 2-year-old tree is 21 - ANSWERS-discrete
the height of a 2 y/o maple tree is 28.3 ft - ANSWERS-continuous
survey responses of "good, better, best" - ANSWERS-ordinal
the body top of eight different giant pandas - ANSWERS-interval
the eye color of college students - ANSWERS-nominal
the weight of rats (g) in a research project - ANSWERS-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) - ANSWERS-8
if the standard deviation of a set of data is zero what can you conclude about the set of values -
ANSWERS-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 - ANSWERS-d-98
quartile 3 is the same as the median - ANSWERS-false
what is the chance that a fetus will be female
a-0.5
b-0.75
c-0.25
d- cannot be determined - ANSWERS-d- cannot be determined
can the SD for a data be negative - ANSWERS-no SD is calculation of variability it cannot be
negative
does SD change if the sample size increases? - ANSWERS-it depends on the sample
if a sample size is 1 (n=1) could we calculate standard deviation - ANSWERS-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 - ANSWERS-false
can the mean and median of data equal to zero or negative values - ANSWERS-yes, they can
have any value
Questions & Answers10
a sample of 120 employees of a company is selected, and the average age is found to be 37
y/o... - ANSWERS-Statistic
after taking the first exam, 15 of the students dropped the class - ANSWERS-parameter
the number of limbs of a 2-year-old tree is 21 - ANSWERS-discrete
the height of a 2 y/o maple tree is 28.3 ft - ANSWERS-continuous
survey responses of "good, better, best" - ANSWERS-ordinal
the body top of eight different giant pandas - ANSWERS-interval
the eye color of college students - ANSWERS-nominal
the weight of rats (g) in a research project - ANSWERS-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) - ANSWERS-8
if the standard deviation of a set of data is zero what can you conclude about the set of values -
ANSWERS-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 - ANSWERS-d-98
quartile 3 is the same as the median - ANSWERS-false
what is the chance that a fetus will be female
a-0.5
b-0.75
c-0.25
d- cannot be determined - ANSWERS-d- cannot be determined
can the SD for a data be negative - ANSWERS-no SD is calculation of variability it cannot be
negative
does SD change if the sample size increases? - ANSWERS-it depends on the sample
if a sample size is 1 (n=1) could we calculate standard deviation - ANSWERS-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 - ANSWERS-false
can the mean and median of data equal to zero or negative values - ANSWERS-yes, they can
have any value
