CHOICE QUESTIONS WITH ANSWERS
A certain motel is roughly 20 miles from the entrance to Yosemite National Park. The motel
manager wants to get a better estimate of the distance and asks five people to each measure
the distance, to the nearest tenth of a mile, using the odometer in his or her car. The manager
will use the median of the five measurements as the estimate of the distance. Which of the
following statements is NOT a statistical justification for the manager's plan? -
ANSWER****The actual distance should be considered a variable, and taking five
measurements allows the manager to estimate the variability in the actual distance.
A graph (not shown) of the selling prices of homes in a certain city for the month of April reveals
that the distribution is skewed to the left. Which of the following statements is the most
reasonable conclusion about the selling prices based on the graph? - ANSWER****The value
of maximum minus third quartile is less than the value of first quartile minus minimum.
A scientist recorded the duration of the eruptions of the Old Faithful geyser in Yellowstone
National Park that occurred during a one-month time period. The histogram below shows the
distribution of the duration, in seconds, of the eruptions. Based on the histogram, which of the
following is the best description of the distribution? - ANSWER****The distribution displays
two clusters, with one cluster centered at about 125 seconds and the other centered at about
260 seconds, and has a range of at most 250 seconds.
Data will be collected on the following variables. Which variable can be considered discrete? -
ANSWER****The number of books a person finished reading last month
The following table shows data for the 8 longest roller coasters in the world as of 2015. Which
of the following variables is categorical? - ANSWER****Type
The following list shows the number of video games sold at a game store each day for one
week.
15, 43, 50, 39, 22, 16, 20
, Which of the following is the best classification of the data in the list? -
ANSWER****Quantitative and discrete
The following pie chart summarizes the results of a survey given to airlines about the primary
reason for flight delays.
Which of the following statements is supported by the pie chart? - ANSWER****More delays
were caused by weather than by all other reasons combined.
The following histogram summarizes the amount spent on plane tickets to travel home, in
dollars, for a group of 30 college students.
If the interval size is decreased from $200 to $100, which of the following must remain the
same on the new histogram? - ANSWER****The sum of the frequencies
The prices, in thousands of dollars, of the 35 used cars at a certain car dealership are shown in
the table below.
Which of the following best describes the shape of the distribution of used car prices at the
dealership? - ANSWER****Skewed to the right (positively skewed)
A sample of 100 students from Liberty High School and a sample of 60 students from Central
High School were asked what they planned to do after graduation. Responses fell into five
categories: four-year university (4Y), community college (CC), join the workforce (W), join the
military (M), or undecided (UD). The results are shown in the following bar chart.
Which of the following statements is supported by the bar chart? - ANSWER****For the
category undecided, the number of students from Liberty High School was 4 greater than the
number of students from Central High School.
The following frequency table shows the responses from a group of college students who were
asked to choose their favorite flavor of ice cream.