Question

Describe the four levels of measurement that are needed to determine what descriptive statistics to perform on a dataset. Describe when each measure is appropriate.

Answer #1

The first level of measurement is the **nominal level of
measurement**. In this level of measurement, the numbers in
the variable are used only to classify the data. In this level of
measurement, words, letters, and alpha-numeric symbols can be
used.

The second level of measurement is the **ordinal level of
measurement**. This level of measurement depicts some
ordered relationship among the variable’s observations.

The third level of measurement is the **interval level of
measurement**. The interval level of measurement not only
classifies and orders the measurements, but it also specifies that
the distances between each interval on the scale are equivalent
along the scale from low interval to high interval.

The fourth level of measurement is the **ratio level of
measurement**. In this level of measurement, the
observations, in addition to having equal intervals, can have a
value of zero as well.

Determine which of the four levels of measurement (nominal,
ordinal, interval, ratio) is most appropriate. The rank of
contestants in a competition.
nominal
Interval
ratio
Ordinal

Case 12.1
Determine what variables are categorical (either nominal or
ordinal scales), perform the appropriate descriptive analysis, and
interpret it.

Describe the difference between descriptive and inferential
statistics. Write about a time when you used descriptive statistic
to make a decision in your life.

(a) In each of the following, determine which of the four
levels/scales of measurement (nominal,
ordinal, interval, ratio) is most appropriate.
(i) Salaries of beginning insurance agents.
(ii) Survey responses of: “Strongly agree, agree, disagree,
strongly disagree.”
(iii) Visa credit card numbers.
(iv) Nationalities of students in a survey.
(v) Times required to lubricate a car at a garage.
(vi) The daily ‘low temperature’ for the last month in your
town.
(vii) Telephone area codes.
(viii) Consumer Reports hotel ratings...

Using the data below, perform descriptive statistics analyses
(mean, standard deviation, variance) for scores before and after
the vocabulary unit. Then, determine if there is a significant
difference between the two sets of exam scores by performing a
paired t test. Lastly, write a paragraph to convey the findings,
using APA format.
Vocabulary - Beginning of
Unit:24,18,61,43,39,65,57,54,21,18,46,54,14,34,50,38,44,20,35,19,
and 36
Vocabulary - End of Unit:
55,64,67,59,60,71,60,73,47,67,55,78,48,66,60,63,84,58,73,61 and
65

determine which of the four levels of measurements is
most appropriate. the income range of attendees at a research
conference is gathered as upper, middle, and lower levels.
(a) nominal, (b) ordinal, (c) Interval, (d) Ratio

Identify two types of variables and four scales of measurement.
How they are related with each other? What is the difference
between variables and constants? Why do we need to study variables
instead of constants in statistics?

Describe at least three effective methods for improving reliability
of a classroom test?
What does interrater reliability measure? In what types of
cases or assessments is it important?
Describe the factors that influence reliability. Provide an
example of each.
A reliability coefficient (r) and a standard error of
measurement(SEM) were computed on a test with 10 items. What would
happen to those statistics if the test was increased to forty
items?

Suppose a teacher gives her statistics class a four-question,
multiple-choice quiz at the beginning of the semester to measure
how well prepared they were for the class. The accompanying table
shows the number of students who had 0, 1, 2, 3 and 4 questions
correct. Using α = 0.05, perform a chi-square test to determine if
the number of correct answers per student follows the binomial
probability distribution.
Number of
Correct Answers
per Student
Frequency
0
5
1
6
2...

The Statistics Project
assignment has been broken down into multiple parts and you will
complete these parts throughout the course. This week's assignment
allows you to become familiar with opening data and viewing it in
Microsoft® Excel® and using the Analysis
Toolpak. In research, the individual data points are entered into
databases, but for the purpose of this course, the data is provided
in a spreadsheet for you in the Happiness and Engagement
Dataset.
Imagine you have been asked to...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 39 minutes ago

asked 44 minutes ago

asked 47 minutes ago

asked 52 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago