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BSNS112 Exam 2024 | BSNS 112 Actual Exam 2024 Questions and Correct Answers Rated A+
BSNS112 Exam 2024 | BSNS 112 Actual Exam 2024 Questions and Correct Answers Rated A+
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BSNS112 Exam 2024 | BSNS 112 ActualExam 2024 Questions and Correct
Answers Rated A+
What does quantitative data use? -ANSWER-Means
What is discrete data? -ANSWER-Quantitative. Measured in specific values
What is continuous data? -ANSWER-Quantitative. Measure in infinite
values
What does qualitative data use? -ANSWER-Proportions
What is ordinal data? -ANSWER-Qualitative. Conveys a ranking
What is nominal data? -ANSWER-Qualitative. Uses labels (no ranking)
What variables does a cross tabulation table use? -ANSWER-Categorical
and categorical
What variables does a scatter plot use? -ANSWER-Numerical and
numerical
What variable(s) does a frequency table use? -ANSWER-One categorical
variable
What variables does a stacked/clustered bar chart use? -ANSWER-
Categorical and categorical
What variables does a relative frequency histogram use? -ANSWER-
Categorical and numerical
Define mean -ANSWER-Simple average
,Define median -ANSWER-Middle value when data is ranked
Define mode -ANSWER-Most frequent value
Define trimmed mean -ANSWER-Average when most extreme 5% of data
is cut
Define range -ANSWER-maximum - minimum
Define interquartile range -ANSWER-75th percentile - 25th percentile
Define variance -ANSWER-spread of data around mean (σ²)
What happens when standard deviation increases? -ANSWER-Graph
widens
Define coefficient of variation -ANSWER-Compares variability between
groups with different magnitudes
Coefficient of variation equation -ANSWER-SD / x̅ where x̅ is the sample
mean
What does it mean by a positively skewed graph? -ANSWER-Tail trails to
the right. Mean > Median > Mode
What does it mean by a negative skewed graph? -ANSWER-Tail trails to
the left. Mode > Median > Mean
When is a graph significantly skewed? -ANSWER-Skewness more than
twice the standard error
Define kurtosis -ANSWER-Measure of the extent to which observations
cluster around a central point
, What is the normal distribution kurtosis value? -ANSWER-0
Define positive kurtosis -ANSWER-Data clusters more in the centre
Define negative kurtosis -ANSWER-Data clusters less in the centre
How is cross-sectional data collected? -ANSWER-By observing many
subjects at the same point of time, or without regard to differences in time
What is time-series data? -ANSWER-A sequence taken at successive
equally spaced points in time (discrete-time data)
Define association -ANSWER-How one variable relates to another
Define covariance -ANSWER-Measure of the co-movement between 2
variables (measured in units)
Define positive covariance -ANSWER-2 variables move in the same
direction
Define negative covariance -ANSWER-2 variables move in the opposite
direction
Define the correlation coefficient -ANSWER-Measure of the linear
relationship between 2 variables (scaled to equal a value between -1 and
+1)
Define positive correlation -ANSWER-2 variables move in the same linear
direction
Define negative correlation -ANSWER-2 variables move in the opposite
linear direction
Define parameter -ANSWER-A summary measure that describes a
characteristic of the population
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