Data Literacy - Data Collection to Data Analysis Part 3

What numerical values represent the intensity of pixels in a grayscale image?

• -255 to 255

• 0 to 1

• 0 to 255

• 1 to 256

What is a "Channel" in the context of image processing?

• A communication pathway in networks

• A matrix representing pixel intensity values in an image

• A single dimension of a dataset

• A collection of multimedia data

Which method can handle datasets that are too large to process efficiently?

• Outlier detection

• Sampling techniques

• Typographical error correction

• Removing duplicate data

What is the purpose of splitting the data into a training set and a testing set?

• To eliminate the need for data cleaning

• To reduce the size of the dataset

• To train the model with the training set and evaluate its performance with the testing set

• To only use one dataset for training and evaluation

Which of the following is NOT a strategy for handling missing data?

• Deleting rows or columns with missing values

• Using algorithms that can handle missing data

• Ignoring missing data without addressing it

• Inputting missing values with estimates