STA FINAL
Which of the following is not used to gather data or information from a population of
interest? - ANS-Questionnaires
Surveys
Census
Which of the following is a categorical variable?
Blood Type
Height
Weight
Volume of your gas Tank - ANS-Blood Type
Which of the following is not a categorical variable?
Weight of the Individual
Race Category of an Individual
Hand Dominance of Individuals
Personality type of an Individual - ANS-Weight of the individual
Assuming the 68-95-99.7 rule, what is the probability of an observation being between
one and two standard deviations higher than the mean? - ANS-0.1350
Assuming the 68-95-99.7 rule, what is the probability of an observation being lower than
two standard deviations below the mean? - ANS-
Assuming the 68-95-99.7 rule, what percentage of all observations fall between two and
three standard deviations below the mean? - ANS-2.35%
Assuming the 68-95-99.7 rule, what percentage of all observations will be lower than
three standard deviations lower than the mean? - ANS-0.15%
Given that we have a normal model with mean 84 and standard deviation of 21. What is
the z-score of 105? - ANS-1
Given that we have a normal model with mean 84 and standard deviation of 21. What is
the probability of an observation above 65? - ANS-0.8159
, Given that we have a normal model with mean 84 and standard deviation of 21. What is
the probability of an observation between 73 and 95? - ANS-0.3969
If a pediatrician wants to keep track of the growth of the babies she has under her care
in terms of weight and height, which of the following displays would help her track that
information? - ANS-
Suppose we have the following data:
24 26 32 43 18 16 8 2 9
The median of the data set is: - ANS-18
Suppose we have the following data:
24 26 32 43 18 16 8 2 9
The mean of the data set is: - ANS-19.78
Suppose we have the following data:
24 26 32 45 17 16 8 2 11
Is the data symmetrical or skewed? - ANS-The data is skewed because the mean and
median are not equal.
Suppose we have the following data:
24 26 32 43 18 16 8 2 9
What is the direction of the skew in the data? If any - ANS-The data is skewed right
because the mean is larger than the median.
Suppose we have the following data:
24 26 32 43 18 16 8 2 9
Which of the following is not used to gather data or information from a population of
interest? - ANS-Questionnaires
Surveys
Census
Which of the following is a categorical variable?
Blood Type
Height
Weight
Volume of your gas Tank - ANS-Blood Type
Which of the following is not a categorical variable?
Weight of the Individual
Race Category of an Individual
Hand Dominance of Individuals
Personality type of an Individual - ANS-Weight of the individual
Assuming the 68-95-99.7 rule, what is the probability of an observation being between
one and two standard deviations higher than the mean? - ANS-0.1350
Assuming the 68-95-99.7 rule, what is the probability of an observation being lower than
two standard deviations below the mean? - ANS-
Assuming the 68-95-99.7 rule, what percentage of all observations fall between two and
three standard deviations below the mean? - ANS-2.35%
Assuming the 68-95-99.7 rule, what percentage of all observations will be lower than
three standard deviations lower than the mean? - ANS-0.15%
Given that we have a normal model with mean 84 and standard deviation of 21. What is
the z-score of 105? - ANS-1
Given that we have a normal model with mean 84 and standard deviation of 21. What is
the probability of an observation above 65? - ANS-0.8159
, Given that we have a normal model with mean 84 and standard deviation of 21. What is
the probability of an observation between 73 and 95? - ANS-0.3969
If a pediatrician wants to keep track of the growth of the babies she has under her care
in terms of weight and height, which of the following displays would help her track that
information? - ANS-
Suppose we have the following data:
24 26 32 43 18 16 8 2 9
The median of the data set is: - ANS-18
Suppose we have the following data:
24 26 32 43 18 16 8 2 9
The mean of the data set is: - ANS-19.78
Suppose we have the following data:
24 26 32 45 17 16 8 2 11
Is the data symmetrical or skewed? - ANS-The data is skewed because the mean and
median are not equal.
Suppose we have the following data:
24 26 32 43 18 16 8 2 9
What is the direction of the skew in the data? If any - ANS-The data is skewed right
because the mean is larger than the median.
Suppose we have the following data:
24 26 32 43 18 16 8 2 9
