Straighterline Business Stats Final exam with 100- correct answers(graded A+)
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Straighterline MAT
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Straighterline MAT
This idea of planning your approach to the course before you start is called
Metacognition
Metacognition involves five distinct skills
Assess the task
Evaluate your strengths and weaknesses
Plan an approach
Apply strategies and monitor your performance
Reflect and adjust if needed
...
Straighterline
Business Stats
Final exam with
100% correct
answers(graded
A+)
The main purpose of descriptive statistics is to -
answer Summarize data in a useful and
informative manner
Which word is NOT part of the definition of
descriptive statistics? - answer Predicting
A marketing class of 50 students evaluated the
instructor using the following scale: superior, good,
average, poor, and inferior. The descriptive
,summary showed the following survey results: 2%
superior, 8% good, 45% average, 45% poor, and 0%
inferior. - answer c. Most students rated the
instructor as poor or average.
What type of variable is the number of robberies
reported in your city? - answer Quantitative
The Nielsen Ratings break down the number of
people watching a particular television show by
age. What level of measurement is age? - answer
Ratio
What level of measurement is a person's "favorite
sport"? - answer Nominal
The final rankings of the top 20 NCAA college
basketball teams are an example of which level of
measurement? - answer Ordinal
What level of measurement is the Centigrade
temperature scale? - answer Interval
A survey includes a question regarding marital
status that has the following responses: single,
married, divorced, separated, or widowed. What is
,the scale of measurement for this question? -
answer Nominal
A group of women tried five brands of fingernail
polish and ranked them according to preference.
What level of measurement is this? - answer
Ordinal
Shoe style is an example of what level of
measurement? - answer Nominal
When TV advertisements report "2 out of 3
dentists surveyed indicated they would
recommend Brand X toothpaste to their patients,"
an informed consumer may question the conclusion
because the: - answer Advertisement does not
include the total number of dentists surveyed
A sample of the paramedical fees charged by
clinics revealed these amounts: $55, $49, $50, $45,
$52, and $55. What is the median charge? - answer
51.00
For a data set with an odd number of observations
that have been sorted from smallest to largest
values, where is the median located? - answer (n +
1)/2
, Assume a student received the following grades
for the semester: History, B; Statistics, A; Spanish,
C; and English, C. History and English are 5 credit-
hour courses, Statistics a 4 credit-hour course, and
Spanish a 3 credit-hour course. If 4 grade points
are assigned for an A, 3 for a B, and 2 for a C, what
is the weighted mean grade for the semester? -
answer 2.76
A disadvantage of using an arithmetic mean to
summarize a set of data is that __________. - answer
It can be biased by one or two extremely small or
large values
A survey item asked students to indicate their
class in college: freshman, sophomore, junior, or
senior. Which measure(s) of central location would
be appropriate for the data generated by that
questionnaire item? - answer Mode and median
The times (in minutes) that several underwriters
took to review applications for similar insurance
coverage are 50, 230, 52, and 57. What is the
median length of time required to review an
application? - answer 54.5
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