22 Questions
Match the data analysis process step with its description:
Data Requirement Gathering = Decide what to analyze and how to measure it Data Collection = Collect your data based on requirements Data Cleaning = Data should be cleaned and error free Data Interpretation = Express or communicate your data analysis
Match the core areas of data analysis with their methods:
Quantitative Data Analysis Methods = Quantitative data is defined as the value of data in the form of counts or numbers Qualitative Data Analysis Methods = Analysis of non-numeric data for patterns, themes, and meanings Counter = Count equated with entities Measurement of physical objects = Calculating measurement of any physical thing
Match the description with the aspect of data analysis engineering:
Insights from unstructured information = Data analysis involves sorting through massive amount of unstructured information and deriving key insights from it Use of charts and graphs = Data Visualization often appears in the form of charts and graphs Value in decision-making = The insights derived from data analysis are enormously valuable for decision-making at companies of all sizes Data modeling and transformation = Data analysis is a process of inspecting, cleansing, transforming and modeling data with the goal of discovering useful information
Match the following measurement scales with their characteristics:
Nominal Scale = Numbers serve as tags or labels only, to identify or classify an object Ordinal Scale = Reports the ranking and ordering of the data without establishing the degree of variation between them Interval Scale = Quantitative measurement scale where there is order, the difference between the variables is meaningful and equal, and the presence of zero is arbitrary Ratio Scale = Similar to interval scale but has a true zero point
Match the following examples with their corresponding measurement scales:
What is your gender? M- Male F- Female = Nominal Scale How satisfied are you with our products? 1- Totally Satisfied 2- Satisfied 3- Neutral 4- Dissatisfied 5- Totally Dissatisfied = Ordinal Scale Please state your annual income: Below $40,000, $40,000-$60,000, $60,000-$80,000, $80,000-$100,00 = Interval Scale Temperature measurement = Interval Scale
Match the following qualitative data analysis methods with their descriptions:
Sensory calculation = Mechanism to naturally sense the measured parameters to create a constant source of information Projection of data = Future projection of data using algorithms and mathematical analysis tools Quantification of qualitative entities = Identifying numbers to qualitative information Measurement Scales = Includes nominal, ordinal, interval, and ratio scales
What is the goal of data analysis?
To transform and model data
Which step comes after data cleaning in the data analysis process?
Data Collection
What do quantitative data analysis methods deal with?
Physical objects
What happens during data interpretation in the data analysis process?
Sorting through unstructured information
What type of insights are derived from data analysis?
Enormously valuable insights for decision-making
What appears in the form of charts and graphs during data visualization?
Insights from the data analysis
Which type of data analysis includes words, observations, images, and symbols?
Qualitative data analysis
What type of measurement scale only serves as 'tags' or 'labels' to identify or classify an object?
Nominal Scale
Which measurement scale reports the ranking and ordering of the data without establishing the degree of variation between them?
Ordinal Scale
In which measurement scale is the difference between two variables meaningful and equal?
Interval Scale
Which type of scale is used to calculate customer or employee satisfaction, such as the Likert scale?
Ordinal Scale
What is an example of a variable measured on an interval scale?
Annual income
Which scale is used to understand preferences, such as respondents' laptop brand preferences?
Ordinal Scale
'How frequently do you have to get the phone repaired?' would be an example of which measurement scale?
Nominal Scale
'What is your gender?' would be an example of which measurement scale?
Nominal Scale'
Which scale is used for questions like 'How happy are you with the customer service?' where respondents choose from options like 'Very Unhappy', 'Unhappy', 'Neutral', etc.?
Ordinal Scale'
Study Notes
Data Analysis Process
- The goal of data analysis is to extract insights from data.
- The step that comes after data cleaning in the data analysis process is data transformation.
- Data interpretation is the stage where meaning is derived from the analyzed data.
Data Analysis Methods
- Quantitative data analysis methods deal with numerical data and provide statistical insights.
- Qualitative data analysis methods deal with non-numerical data, such as words, observations, images, and symbols.
Measurement Scales
- Nominal scale only serves as 'tags' or 'labels' to identify or classify an object, e.g., 'What is your gender?'
- Ordinal scale reports the ranking and ordering of the data without establishing the degree of variation between them, e.g., 'How happy are you with the customer service?'
- Interval scale is used to measure variables where the difference between two variables is meaningful and equal, e.g., temperature in Celsius.
- Likert scale is an example of an interval scale, used to calculate customer or employee satisfaction.
Data Visualization
- Data visualization presents data in the form of charts and graphs.
Test your knowledge of data analysis, including the process of inspecting, cleansing, transforming, and modeling data to discover useful information. Explore the importance of data analysis in supporting decision-making at companies of all sizes.
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