ELEMENTARY STATISTICS 14 BY MARIO FINAL
PAPER 2026 SOLVED QUESTIONS WITH FULL
SOLUTION ALREADY PASSED
◉ Descriptive Stats Example:
A survey of 202 pilots found that 20% admit that they have made a
serious error due to sleepiness. What is the descriptive statistic.
Answer: The statement "20% admit that they have made serious
errors due to sleepiness" is a descriptive statistic.
◉ Inferential Statistics.
Answer: is the branch of statistics that involves using a sample to
draw conclusions about a population. A basic tool in the study of this
is probability.
◉ Inferential Statistics Example:
An inference is drawn from the sample is that "an association exists
between sleepiness and pilot error.".
Answer: Making this inference is an example of inferential stats
◉ qualitative.
Answer: attributes, lables, or nonnumerical entries
,EX: eye colors of models since eye color is a nonnumerical attribute
◉ quantitative
(N).
Answer: numerical measurements or counts
EX: heights of hot air balloons
◉ census.
Answer: is a count or measure of an entire population & provides
complete information
◉ sampling.
Answer: is a count or measure of PART of a population and is more
commonly used.
◉ sampling error.
Answer: is the difference between the results of a sample and those
of a population. appropriate sampling techniques must be used to
ensure that inferences about the population are valid and these are
not made
, ◉ sampling techniques.
Answer: -simple random sample
-stratified sample
-cluster sample
-systematic sample
-convenience sample
◉ random sample.
Answer: is one in which every member of the population has an
equal chance of being selected
EX: using random digit dialing, researchers call 1400 ppl and ask
what obstacles, such as childcare, keep them from exercising.
◉ simple random sample.
Answer: a sample in which every possible sample of the same size
has the same chance of being selected
EX: each telephone number has an equal chance of being dialed, and
all samples of 1400 have an equal chance of being selected
◉ stratified sample.
Answer: members of the population are divided into 2 or more
subsets, called strata, that share similar characteristics such as age,
gender, ethnicity, or even political preference. A sample is then
randomly selected from each of the strata.
PAPER 2026 SOLVED QUESTIONS WITH FULL
SOLUTION ALREADY PASSED
◉ Descriptive Stats Example:
A survey of 202 pilots found that 20% admit that they have made a
serious error due to sleepiness. What is the descriptive statistic.
Answer: The statement "20% admit that they have made serious
errors due to sleepiness" is a descriptive statistic.
◉ Inferential Statistics.
Answer: is the branch of statistics that involves using a sample to
draw conclusions about a population. A basic tool in the study of this
is probability.
◉ Inferential Statistics Example:
An inference is drawn from the sample is that "an association exists
between sleepiness and pilot error.".
Answer: Making this inference is an example of inferential stats
◉ qualitative.
Answer: attributes, lables, or nonnumerical entries
,EX: eye colors of models since eye color is a nonnumerical attribute
◉ quantitative
(N).
Answer: numerical measurements or counts
EX: heights of hot air balloons
◉ census.
Answer: is a count or measure of an entire population & provides
complete information
◉ sampling.
Answer: is a count or measure of PART of a population and is more
commonly used.
◉ sampling error.
Answer: is the difference between the results of a sample and those
of a population. appropriate sampling techniques must be used to
ensure that inferences about the population are valid and these are
not made
, ◉ sampling techniques.
Answer: -simple random sample
-stratified sample
-cluster sample
-systematic sample
-convenience sample
◉ random sample.
Answer: is one in which every member of the population has an
equal chance of being selected
EX: using random digit dialing, researchers call 1400 ppl and ask
what obstacles, such as childcare, keep them from exercising.
◉ simple random sample.
Answer: a sample in which every possible sample of the same size
has the same chance of being selected
EX: each telephone number has an equal chance of being dialed, and
all samples of 1400 have an equal chance of being selected
◉ stratified sample.
Answer: members of the population are divided into 2 or more
subsets, called strata, that share similar characteristics such as age,
gender, ethnicity, or even political preference. A sample is then
randomly selected from each of the strata.
