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week 7 Flashcards | StudBud
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week 7
week 7
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Answers
1
Which type of event is described as one event not affecting another?
Mutually Exclusive
Dependent
Conditional
Independent
2
Which operation in OLAP is used to reduce the level of detail in data?
Roll-up
Slicing
Drill-down
Pivoting
3
What is the primary limitation of OLAP?
It lacks the ability to analyze trends
It requires significant computational power
It can only be used by statisticians
It cannot integrate multiple data sources
4
Which spreadsheet tools can read this sheet and export to xlsx format?
LibreOffice
Numbers
Google Docs
Excel
5
Which is an example of a mutually exclusive event?
Choosing a blue ball from a bag
Rolling two dice
A card being both red and black at the same time
Flipping a coin and getting heads or tails
6
Which of the following best describes a frequency polygon?
A bar chart with continuous data
A scatter plot showing relationships between two variables
A graphical representation of a probability distribution
A graphical representation of median calculations
7
Which type of chart is best for displaying categorical or discrete data?
Pie Chart
Line Graph
Scatter Plot
Histogram
8
What does a scatter plot display?
Relationships between two numerical variables
Measures of central tendency
Frequency of categorical data
Time series trends
9
Which type of statistic is primarily concerned with summarizing and organizing data?
Experimental
Prescriptive
Descriptive
Predictive
10
Which of the following represents a categorical variable?
Type of vehicle (car, bike, bus)
Number of students in a class
Temperature in Celsius
Weight in kilograms
11
Which is NOT an advantage of OLAP?
Faster decision-making
It simplifies statistical modeling
It allows non-technical users to run queries
Pre-aggregated data speeds up queries
12
What is the primary purpose of probability in statistics?
To measure uncertainty and predict likelihood
To visualize data trends
To determine absolute certainty
To replace experimental data
13
Which statistical concept helps determine the spread of a dataset?
Variance
Mean
Probability
Mode
14
What does OLAP stand for?
Offline Analytical Processing
Online Advanced Processing
Operational Logic Analysis Processing
Online Analytical Processing
15
Which statistical measure is NOT a measure of spread?
Standard Deviation
Variance
Range
Mean
16
What type of graph is ideal for showing trends over time?
Scatter Plot
Bar Chart
Line Graph
Frequency Polygon
17
Which of the following is used to show the distribution of continuous data?
Histogram
OLAP
Bar Chart
Pie Chart
18
Which of the following is a key feature of OLAP?
One-dimensional data analysis
Multidimensional data analysis
Single-table processing
Linear data storage
19
Which of the following is NOT a type of statistics?
Descriptive
Distributive
Prescriptive
Predictive
20
What is a key benefit of OLAP?
It is used only for machine learning models
It simplifies spreadsheet usage
It replaces all statistical methods
It allows non-technical users to analyze data
21
Which OLAP feature allows users to view data at different levels of granularity?
Roll-up
Drill-down
Pivoting
Slice and dice
