6001 Exam Prep
In a study of immune responses to the flu shot during pregnancy, one of the pieces
of information collected about each participant is their pre-pregnancy weight (kg).
This is an example of what type of data? - ANSWER Continuous
One piece of data we have about the UUS population is the type of mental illness
they reported having had in the past year. Responses are in the variable "mitype"
and are summarized below.
What type of mental illness was reported by the largest proportion of students? -
ANSWER None
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever"). These two variables are cross-tabulated below.
What percent of the population has ever used marijuana? - ANSWER 46.9%
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever"). These two variables are cross-tabulated below.
What percent of the population reports never having smoked a cigarette and never
using marijuana? - ANSWER 46.5%
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever"). These two variables are cross-tabulated below.
What percent of students who have used marijuana have ever smoked a cigarette? -
ANSWER 53.1%
Which of the following measures of the "center" of your data is most affected by
outliers (very large or very small data values)? - ANSWER mean
Dr. Sharpe just created a histogram of the variable "age" in his data set and noticed
that it is very left-skewed. Thus, he expects that when he calculates the mean and
median of age he will find that: - ANSWER mean age < median age
If a 10-year-old's height is in the 25th percentile (for his age), that means that: -
ANSWER 25% of 10-year-olds are shorter than he is (have a smaller height than
he does)
The most appropriate measure of variability that should be reported to accompany
the mean is the: - ANSWER standard deviation (or variance)
, For members of the UUS student population who have ever used marijuana, we
have the age at which they first tried marijuana. A boxplot of these ages is below.For
these data, the mean age when first tried marijuana is: - ANSWER not shown on
boxplot
In a study of immune responses to the flu shot during pregnancy, one of the pieces
of information collected about each participant is their self-reported overall health,
either "excellent", "good", "fair", or "poor". This is an example of what type of data? -
ANSWER Ordinal
One piece of data we have about the UUS population is the type of mental illness
they reported having had in the past year. Responses are in the variable "mitype"
and are summarized below.
What percentage of the population reported having a moderate or less severe
mental illness (i.e., moderate or mild or none)? - ANSWER 92.27%
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever").
These two variables are cross-tabulated below.What percent of the population has
ever smoked a cigarette? - ANSWER 31.5%
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever"). These two variables are cross-tabulated below.
What percent of the population reports both having smoked a cigarette and using
marijuana? - ANSWER 24.9%
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever"). These two variables are cross-tabulated below.Among students who
have ever smoked a cigarette, what percentage have used marijuana? - ANSWER
20.9%
For members of the UUS student population who have ever used marijuana, we
have the age at which they first tried marijuana. A boxplot of these ages is below.For
these data, the 25th percentile of age when first tried marijuana is: - ANSWER 15
In a study of immune responses to the flu shot during pregnancy, one of the pieces
of information collected about each participant is at which of the three participating
hospitals they plan to deliver (OSU Wexner Medical Center, Riverside Methodist,
Mount Carmel). This is an example of what type of data? - ANSWER Nominal
The variance (and standard deviation) quantifies the spread of data values around
the: - ANSWER mean
In a study of immune responses to the flu shot during pregnancy, one of the pieces
of information collected about each participant is the number of times they have
been pregnant (including the current pregnancy). This is an example of what type of
data? - ANSWER discrete
In a study of immune responses to the flu shot during pregnancy, one of the pieces
of information collected about each participant is their pre-pregnancy weight (kg).
This is an example of what type of data? - ANSWER Continuous
One piece of data we have about the UUS population is the type of mental illness
they reported having had in the past year. Responses are in the variable "mitype"
and are summarized below.
What type of mental illness was reported by the largest proportion of students? -
ANSWER None
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever"). These two variables are cross-tabulated below.
What percent of the population has ever used marijuana? - ANSWER 46.9%
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever"). These two variables are cross-tabulated below.
What percent of the population reports never having smoked a cigarette and never
using marijuana? - ANSWER 46.5%
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever"). These two variables are cross-tabulated below.
What percent of students who have used marijuana have ever smoked a cigarette? -
ANSWER 53.1%
Which of the following measures of the "center" of your data is most affected by
outliers (very large or very small data values)? - ANSWER mean
Dr. Sharpe just created a histogram of the variable "age" in his data set and noticed
that it is very left-skewed. Thus, he expects that when he calculates the mean and
median of age he will find that: - ANSWER mean age < median age
If a 10-year-old's height is in the 25th percentile (for his age), that means that: -
ANSWER 25% of 10-year-olds are shorter than he is (have a smaller height than
he does)
The most appropriate measure of variability that should be reported to accompany
the mean is the: - ANSWER standard deviation (or variance)
, For members of the UUS student population who have ever used marijuana, we
have the age at which they first tried marijuana. A boxplot of these ages is below.For
these data, the mean age when first tried marijuana is: - ANSWER not shown on
boxplot
In a study of immune responses to the flu shot during pregnancy, one of the pieces
of information collected about each participant is their self-reported overall health,
either "excellent", "good", "fair", or "poor". This is an example of what type of data? -
ANSWER Ordinal
One piece of data we have about the UUS population is the type of mental illness
they reported having had in the past year. Responses are in the variable "mitype"
and are summarized below.
What percentage of the population reported having a moderate or less severe
mental illness (i.e., moderate or mild or none)? - ANSWER 92.27%
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever").
These two variables are cross-tabulated below.What percent of the population has
ever smoked a cigarette? - ANSWER 31.5%
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever"). These two variables are cross-tabulated below.
What percent of the population reports both having smoked a cigarette and using
marijuana? - ANSWER 24.9%
Two things we know about the UUS population is whether students have ever
smoked a cigarette ("cigever") and whether they have ever used marijuana
("mjever"). These two variables are cross-tabulated below.Among students who
have ever smoked a cigarette, what percentage have used marijuana? - ANSWER
20.9%
For members of the UUS student population who have ever used marijuana, we
have the age at which they first tried marijuana. A boxplot of these ages is below.For
these data, the 25th percentile of age when first tried marijuana is: - ANSWER 15
In a study of immune responses to the flu shot during pregnancy, one of the pieces
of information collected about each participant is at which of the three participating
hospitals they plan to deliver (OSU Wexner Medical Center, Riverside Methodist,
Mount Carmel). This is an example of what type of data? - ANSWER Nominal
The variance (and standard deviation) quantifies the spread of data values around
the: - ANSWER mean
In a study of immune responses to the flu shot during pregnancy, one of the pieces
of information collected about each participant is the number of times they have
been pregnant (including the current pregnancy). This is an example of what type of
data? - ANSWER discrete
