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research_f6

QuestionAnswer
Histogram differs from bar chart because: Shows distribution of continuous data?
Which package is expensive but popular for desktops? SPSS
Which analysis estimates population parameters from sample data? Predictive?
Box plot shows: Median, quartiles, and outliers
Which is the main advantage of Excel? Easy data analysis for decision-making?
Mode is not robust because: Small changes can alter it significantly?
Which central tendency measure is most affected by outliers? Mean?
Which software is open-source and popular with statisticians? R?
Null hypothesis (H0) represents: No effect or no difference?
The mode represents: Most frequent value
Which regression tool minimizes error? Best-fit line?
Standard deviation is often symbolized by: σ?
Regression is used to: Predict dependent variable from independent variable?
Business intelligence focuses on: Strategic decision-making?
Inferential statistics allows us to: Make generalizations about population?
The mean is defined as: Sum of values divided by number of values?
Descriptive statistics provides: Summaries of data?
Normal distribution is characterized by: Mean and standard deviation?
Which distribution is bell-shaped and symmetric? Poisson?
The goal of statistical computing is: Extract insights and support decisions?
18/20
Created by: f3xo
 

 



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