QMB 3200 2025/2026 Exam Questions
and Verified Answers | Already Graded
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Median - 🧠ANSWER ✔✔Middle value if odd number of observations,
average of two middle numbers if even number of observations
When we increase sample size - 🧠ANSWER ✔✔standard error decreases
Central Limit Theorem - 🧠ANSWER ✔✔the sample mean can be
approximated by a a normal distribution as the sample size becomes large
Probability - 🧠ANSWER ✔✔a numerical measure of the likelihood of an
event occuring, ranges from 0 to 1
Discrete Random Variables - 🧠ANSWER ✔✔take on a specific value
, Continous Random Variables - 🧠ANSWER ✔✔within an interval
Panel data - 🧠ANSWER ✔✔combination of cross-sectional and time series
data
Statistical Inference - 🧠ANSWER ✔✔uses data from a sample to make
estimates and test hypothesis about the characterististics of a population
Bar Chart - 🧠ANSWER ✔✔a visual display of frequency; relative frequency
and percent frequency distrubutions
Histogram shows - 🧠ANSWER ✔✔shows the shape of the distribution of
the variable of interest
a distribution is skewed if more of the data is left or right
Scatter Diagram and Tredline - 🧠ANSWER ✔✔a scatter diagram is a
graphical display between two quantitative variables and a trendline
provides an approximation which can be positive, negative or zero
How to calcuate variance - 🧠ANSWER ✔✔=var.s(
Chebyshev's Theorem - 🧠ANSWER ✔✔allows us to make statements
about the population
and Verified Answers | Already Graded
A+
Median - 🧠ANSWER ✔✔Middle value if odd number of observations,
average of two middle numbers if even number of observations
When we increase sample size - 🧠ANSWER ✔✔standard error decreases
Central Limit Theorem - 🧠ANSWER ✔✔the sample mean can be
approximated by a a normal distribution as the sample size becomes large
Probability - 🧠ANSWER ✔✔a numerical measure of the likelihood of an
event occuring, ranges from 0 to 1
Discrete Random Variables - 🧠ANSWER ✔✔take on a specific value
, Continous Random Variables - 🧠ANSWER ✔✔within an interval
Panel data - 🧠ANSWER ✔✔combination of cross-sectional and time series
data
Statistical Inference - 🧠ANSWER ✔✔uses data from a sample to make
estimates and test hypothesis about the characterististics of a population
Bar Chart - 🧠ANSWER ✔✔a visual display of frequency; relative frequency
and percent frequency distrubutions
Histogram shows - 🧠ANSWER ✔✔shows the shape of the distribution of
the variable of interest
a distribution is skewed if more of the data is left or right
Scatter Diagram and Tredline - 🧠ANSWER ✔✔a scatter diagram is a
graphical display between two quantitative variables and a trendline
provides an approximation which can be positive, negative or zero
How to calcuate variance - 🧠ANSWER ✔✔=var.s(
Chebyshev's Theorem - 🧠ANSWER ✔✔allows us to make statements
about the population
