QUESTION 1 Which of the following objects are raw data? (As opposed to processed
ID: 3878533 • Letter: Q
Question
QUESTION 1
Which of the following objects are raw data? (As opposed to processed data.)
The text of Moby Di extracted from a scanned image using optical character recognition (OCR).
A TIFF image file obtained by scanning a book page.
A Web page downloaded using urllib.request.urlopen() or saved from a Web browser.
A table that contains the frequencies of each unique word in Moby Dick.
QUESTION 2
Which data analysis technique is a machine learning technique?
Information retrieval.
Signal processing.
Decision trees.
Linear regressions.
1-The text of Moby Di extracted from a scanned image using optical character recognition (OCR).
2-A TIFF image file obtained by scanning a book page.
A Web page downloaded using urllib.request.urlopen() or saved from a Web browser.
A table that contains the frequencies of each unique word in Moby Dick.
QUESTION 2
Which data analysis technique is a machine learning technique?
1-Information retrieval.
2-Signal processing.
3-Decision trees.
4-Linear regressions.
Explanation / Answer
2)Answer:
4.Linear regressions
Explanation:
Linear regression is a statistical modelling technique, which attempts to model the relationship between an explanatory variable and a dependent variable by fitting the observed data points on a linear equation. For eg: Modelling the BMI of individuals using weight.
A linear regression is used if there is relationship or significant association between the variables. This can be checked by scatterplots. If no association appears between the variables, fitting a linear regression model to the data will not provide useful model.
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