PORTAGE LEARNING STATISTICS FINAL EXAM LATEST 2024/2025
WITH ACTUAL QUESTIONS AND CORRECT VERIFIED (DETAILED)
ANSWERS/ALREADY GRADED A
Parking at a university has become a problem. University administrators are
interested in determining the average time it takes a student to find a parking
spot. An administrator inconspicuously followed 180 students and recorded
how long it took each of them to find a parking spot. Which of the following
types of graphs should NOT be used to display information concerning the
students parking times? - ANSWER-pie chart
A large state university conducted a survey among their students and received
300 responses. The survey asked the students to provide the following
information:* Age* Year in School (Freshman, Sophomore, Junior, Senior)*
Gender* GPA - ANSWER-A histogram because Age is a numerical variable.
The two histograms below display the exact same data. How do the plots
differ? - ANSWER-Histogram (i) uses relative frequencies to show the
proportion of observations at a given value. Histogram (ii) uses frequencies to
simply count the number of observations at a given value.
In a survey, high school graduates were asked "Did you play sports in high
school?" The response was electronically recorded as a "1" for yes and a "0" for
no. This is an example of . - ANSWER-coded categorical data
A large state university conducted a survey among their students and received
400 responses. The survey asked the students to provide the following
information:
,*Age
*Year in School (Freshman, Sophomore, Junior, Senior)
*Major
What type of graph would you use to describe the variable Major? - ANSWER-A
bar chart because Major is a categorical variable.
In a survey, married couples were asked, "Do you have children?" The response
was electronically recorded as a "1" for yes and a "0" for no. This is an example
of . - ANSWER-Coded categorical data
In a study of 900 adults, 45 out of the 325 men in the study said that they
preferred to rent a movie on DVD rather than going out to a movie
theater.What is the approximate percentage of men in this study who prefer to
rent a movie on DVD? - ANSWER-13.8%
In a study of 1350 elementary school children, 118 out of the 615 girls in the
study said they want to be a teacher when they grow up.What percent of girls
want to be a teacher when they grow up? - ANSWER-19.2%
The histogram below shows the distribution of pass rates on a swimming test
taken by all children who completed a four week summer swim course at the
local YMCA. What is the typical pass rate for the swim test? - ANSWER-about
75%
Marital status of each member of a randomly selected group of adults is an
example of what type of variable? - ANSWER-categorical variable
, The number of parents who attended parent teacher conferences at a local
elementary school is an example of what type of variable? - ANSWER-
numerical variable
A group of 500 patients who suffer from hypothyroidism, a condition in which
your thyroid does not produce enough of certain hormones, were asked to
participate in a study to determine the effectiveness of a new medication. The
patients were randomly divided into two groups, one that was given the actual
medication, and one that received a placebo pill. The results of the study are
below.
Was the new medication effective in treating hypothyroidism? - ANSWER-Yes, a
higher percent of patients who took the medication had improved symptoms
than the patients who took the placebo.
Which of the following would likely show a bimodal distribution in a histogram?
- ANSWER-The heights of all students in a high school band.
A doctor is interested in determining whether a certain medication increases
the risk of high blood pressure. He reviews his patients' medical records and
finds that a higher proportion of people who take the medication are suffering
from high blood pressure. - ANSWER-observational study
A group of students is divided into two groups. One group is a given a new
chewable vitamin and the other group is given a placebo. After six months they
are asked to fill out a questionnaire and given a health exam to see whether
the new vitamin has health benefits that are better than a placebo. - ANSWER-
controlled experiment
A group of students is divided into two groups. One group listens to classical
music while taking a math test and the other group takes the test in silence.
The average test scores of the two groups are compared to see whether
WITH ACTUAL QUESTIONS AND CORRECT VERIFIED (DETAILED)
ANSWERS/ALREADY GRADED A
Parking at a university has become a problem. University administrators are
interested in determining the average time it takes a student to find a parking
spot. An administrator inconspicuously followed 180 students and recorded
how long it took each of them to find a parking spot. Which of the following
types of graphs should NOT be used to display information concerning the
students parking times? - ANSWER-pie chart
A large state university conducted a survey among their students and received
300 responses. The survey asked the students to provide the following
information:* Age* Year in School (Freshman, Sophomore, Junior, Senior)*
Gender* GPA - ANSWER-A histogram because Age is a numerical variable.
The two histograms below display the exact same data. How do the plots
differ? - ANSWER-Histogram (i) uses relative frequencies to show the
proportion of observations at a given value. Histogram (ii) uses frequencies to
simply count the number of observations at a given value.
In a survey, high school graduates were asked "Did you play sports in high
school?" The response was electronically recorded as a "1" for yes and a "0" for
no. This is an example of . - ANSWER-coded categorical data
A large state university conducted a survey among their students and received
400 responses. The survey asked the students to provide the following
information:
,*Age
*Year in School (Freshman, Sophomore, Junior, Senior)
*Major
What type of graph would you use to describe the variable Major? - ANSWER-A
bar chart because Major is a categorical variable.
In a survey, married couples were asked, "Do you have children?" The response
was electronically recorded as a "1" for yes and a "0" for no. This is an example
of . - ANSWER-Coded categorical data
In a study of 900 adults, 45 out of the 325 men in the study said that they
preferred to rent a movie on DVD rather than going out to a movie
theater.What is the approximate percentage of men in this study who prefer to
rent a movie on DVD? - ANSWER-13.8%
In a study of 1350 elementary school children, 118 out of the 615 girls in the
study said they want to be a teacher when they grow up.What percent of girls
want to be a teacher when they grow up? - ANSWER-19.2%
The histogram below shows the distribution of pass rates on a swimming test
taken by all children who completed a four week summer swim course at the
local YMCA. What is the typical pass rate for the swim test? - ANSWER-about
75%
Marital status of each member of a randomly selected group of adults is an
example of what type of variable? - ANSWER-categorical variable
, The number of parents who attended parent teacher conferences at a local
elementary school is an example of what type of variable? - ANSWER-
numerical variable
A group of 500 patients who suffer from hypothyroidism, a condition in which
your thyroid does not produce enough of certain hormones, were asked to
participate in a study to determine the effectiveness of a new medication. The
patients were randomly divided into two groups, one that was given the actual
medication, and one that received a placebo pill. The results of the study are
below.
Was the new medication effective in treating hypothyroidism? - ANSWER-Yes, a
higher percent of patients who took the medication had improved symptoms
than the patients who took the placebo.
Which of the following would likely show a bimodal distribution in a histogram?
- ANSWER-The heights of all students in a high school band.
A doctor is interested in determining whether a certain medication increases
the risk of high blood pressure. He reviews his patients' medical records and
finds that a higher proportion of people who take the medication are suffering
from high blood pressure. - ANSWER-observational study
A group of students is divided into two groups. One group is a given a new
chewable vitamin and the other group is given a placebo. After six months they
are asked to fill out a questionnaire and given a health exam to see whether
the new vitamin has health benefits that are better than a placebo. - ANSWER-
controlled experiment
A group of students is divided into two groups. One group listens to classical
music while taking a math test and the other group takes the test in silence.
The average test scores of the two groups are compared to see whether
