AP CSP Unit 5 Review-Data

The image is from Google Trends that plots Cats and Dogs.

Choose the most accurate description of what this data is actually showing based on what you know about how Google Trends works.

• People like dogs more than cats

• People search for "dogs" more frequently than "cats"

• There was a sharp increase in the dog population sometime between 2014 and 2015

• The popularity of dogs as pets is slightly increasing over time, while the popularity of cats is relatively flat

What is metadata?

• Data that is about the data.

• Data that is everywhere.

• Data that can change.

• Data that needs filtered.

Recognizing patterns and similarities in data visualizations relates to which of the following about the data?

• Causation

• Correlation

• Metadata

• Filtering

Which of the following is NOT a benefit of metadata?

• It can be changed without impacting the primary data

• Used for sorting and filtering information

• Increases effective use of data by providing extra information

• Increases search speeds of the database

Which of the following is NOT a reason for data to be cleaned?

• Data is incomplete

• Data is invalid

• Multiple tables are combined into one

• Data is a string

What is the goal of the data analysis process?

• To search through databases quicker

• To gain insight into new information

• To make sure datasets are clean

• To collect the correct information

The mayor of a city is interested in learning what goals are most important for residents of the city. Members of her staff visit one of the many neighborhoods in the city and ask 20 residents to fill out a survey. The mayor is concerned that the survey may be biased and not accurately reflect the overall interests in her town. Which of the following strategies is MOST likely to address concerns about the data being biased or inaccurate

• Finding the same people surveyed previously to ask more detailed questions.

• Visiting the same neighborhood to collect more survey responses

• Visiting multiple new neighborhoods to collect more survey responses

• Having her staff collect the data using an app rather than paper surveys

In which of the following situations would parallel systems MOST likely be used to help analyze data?

• Data analysis involving two or more columns of data

• Data analysis involving both string and numeric data

• Data analysis involving large datasets

• Data analysis that could result in two or more different types of visualizations

Which of the following conclusions is BEST supported by the histogram chart?

• More than half of all states are larger than 100,000 square miles

• More than half of all states are smaller than 50,000 square miles

• Some states are larger than 200,000 square miles

• The most common size of states is between 50,000 and 100,000 square miles

A restaurant is interested in learning about the food preferences of people living nearby to the restaurant and intends to use survey data to help decide which new items to add to the menu. Which of the following is LEAST likely to be part of the process used to analyze the data?

• Cleaning a data visualization to remove unwanted patterns

• Iteratively creating visualizations to ask and answer new questions

• Cleaning data to remove inconsistencies

• Filtering the data to look at the responses from only certain groups