Parts of a good graph correct answers title
x and y axis
scale
key
data values
Summarizing Qualitative (categorical) Data correct answers tables:
frequency
relative frequency
percent frequency
contingency
graph:
bar chart
pie chart
Summarizing Quantitative Data correct answers ...
BUAL 2600 Exam 2 || Already Graded A+.
Parts of a good graph correct answers title
x and y axis
scale
key
data values
Summarizing Qualitative (categorical) Data correct answers tables:
frequency
relative frequency
percent frequency
contingency
graph:
bar chart
pie chart
Summarizing Quantitative Data correct answers histogram
time series
scatter plot
Ownership correct answers individuals own their own data
confidential and anonymity
Consent correct answers individuals providing data provide expressed content of what personal
data they provide and how the data will be collected, used, and reported
Privacy correct answers measures to ensure a persons data is being protected and kept private
(HIPPA, FERPA)
Currency correct answers how much is data worth to an individuals privacy? should be aware
when data is being sold for monetary gain by others
Openness correct answers aggregate data sets should be freely available to the public (how many
people have or die from a sickness)
Data Dashboard correct answers a visual representation of a set of key business measures (most
important data is provided)
Where should the most important information on a data dashboard be positioned? correct
answers top left
Population correct answers all items at interest for a particular decision or investigations
Sample correct answers a subset of the population
, Purpose of Sampling correct answers to obtain sufficient information to draw a valid inference
about a population
Mean correct answers average; most commonly used
sensitive to extreme values
Median correct answers the value in the middle when the data is arranged in ascending order (not
sensitive to extreme values)
-whenever the data set has extreme values, the median is the preferred measure of the central
location
Left Skewed correct answers mean < median
Right Skewed correct answers mean > median
Mode correct answers the most common value in a data set; unimofal, bimodal, multimodal
If we have extreme values in a data set we prefer to use _____ to find the central location
because it can overcome extreme values correct answers median
Variance correct answers commonly used to measure variability (dispersion)
-the average of the squared differences between each data value and the mean
Standard Deviation correct answers the square root of the variance
-a measure of how far, on average, each value in the data set is to the mean
-measured in the same units as the data, making it more easily interpreted than variance
Population Variance correct answers σ²
Sample Variance correct answers s²
Population Standard Deviation correct answers σ
Sample Standard Deviation correct answers S
The larger the variance..... correct answers the more spread out the data is from the mean and the
more variability one can expect in the observations
The smaller the standard deviation.... correct answers the less risky the investment
The larger the standard deviation.... correct answers the more risky the investment is
the flatter the curve is
The Normal Curve correct answers symmetric
bell-shaped
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