2025/2026 ACTUAL COMPLETE REAL
EXAM QUESTIONS WITH WELL
CORRECT, DETAILED AND VERIFIED
ANSWERS | NEWEST UPDATE |
GUARANTED A+
Which of the following is NOT a level of measurement? - ANSWER:
Quantitative
Which of the following is associated with a parameter? - ANSWER: Data that
were obtained from an entire population.
Which of the following consists of discrete data? - ANSWER: Number of
suitcases on a plane
Which of the following would be classified as categorical data? - ANSWER: Hair
color
Which of the following is typically the least important factor to consider when
conducting a statistical analysis of data? - ANSWER: Formula calculation
,Which of the following is NOT a voluntary response sample? - ANSWER: Quiz
scores from a college level statistics course are analyzed to determine student
progress.
What does it mean for the findings of a statistical analysis of data to be
statistically significant? - ANSWER: The likelihood of getting these results by
chance is very small.
If we are collecting sample data for a study, the _______ that we choose can
greatly influence the validity of our conclusions. For example, we can use
sound statistical methods to analyze data in voluntary response samples, but
the results are not necessarily valid. - ANSWER: sampling method
Identify which of these designs is most appropriate for the given experiment:
completely randomized design, randomized block design, or matched pairs
design.
Currently, there is no approved vaccine for the prevention of infection by a
certain virus. A clinical trial of a possible vaccine is being planned to include
subjects treated with the vaccine while other subjects are given a placebo. -
ANSWER: The most appropriate is completely randomized design.
a. A statistics class with 36 students is arranged so that there are 6 rows with
6 students in each row, and the rows are numbered from 1 through 6. A die
is rolled and a sample consists of all students in the row corresponding to the
outcome of the die.
,b. For the same class described in part (a), the 36 student names are written
on 36 individual index cards. The cards are shuffled and six names are drawn
from the top.
c. For the same class described in part (a), the six youngest students are
selected. - ANSWER: a. This sample is not a simple random sample. It is a
random sample.
b. This sample is a simple random sample. It is a random sample.
c. This sample is not a simple random sample. It is not a random sample.
Which sampling method divides the population up into sections, randomly
selects some of those sections, then chooses all the members from the
selected sections to study? - ANSWER: Cluster
Which sampling method subdivides the population into categories sharing
similar characteristics and then selects a sample from each subdivision? -
ANSWER: Stratified
Determine whether the underlined number is a statistic or a parameter.
A sample of students is selected and it is found that 25% own a television -
ANSWER: Statistic because the value is a numerical measurement describing
a characteristic of a sample.
, Determine whether the data described below are qualitative or quantitative
and explain why.
The blood groups of A, B, AB, and O - ANSWER: The data are qualitative
because they don't measure or they don't measure or count anything.
The exact distances (in centimeters) between the chairs in a college classroom
- ANSWER: The data are continuous because the data can take on any the
data can take on any value in an interval.
A homeowner measured the voltage supplied to his home
on 31 different days, and the average (mean) value is 147.1 volts. - ANSWER:
The given value is a statistic for the year because the data collected represent
a sample.
A particular country has 60 total states. If the areas of all 60 states are added
and the sum is divided by 60,the result is 182, 073square kilometers.
Determine whether this result is a statistic or a parameter. - ANSWER: The
result is a parameter because it describes some characteristic of a population
A survey found that 49% of all respondents have jobs. - ANSWER: The value
is a statistic because it is a numerical measurement describing some
characteristic of a sample.