Understanding Data Representation and Analysis

Which type of graph uses rectangular bars to represent data values?

• Pie Chart

• Bar Graph

• Line Graph

• Box Plot

When is a histogram most appropriately used?

• Showing trends over time

• Comparing parts of a whole

• Displaying the distribution of numerical data

• Comparing categories of data

What is a key feature of a symmetric distribution?

• There are two distinct peaks

• The mean and median are approximately equal

• The data is stretched more on one side

• The mean is greater than the median

Which method is best for studying cause-and-effect relationships?

• Simulation

• Survey

• Observation

• Experiment

What does a pie chart best represent?

• Trends over time

• Proportions of a whole

• Frequency of small data sets

• Distribution using quartiles

What is a characteristic of a skewed right distribution?

• The data is evenly spread

• The mean is less than the median

• The tail extends to the left

• The tail extends to the right

Which type of study involves collecting data by watching and recording without interference?

• Survey

• Simulation

• Observational Study

• Experiment

What is a key feature of a uniform distribution?

• The mean is greater than the median

• There is a significant outlier

• The data is evenly spread across the range

• The data has two distinct peaks

Which graph is used to show trends over time?

• Dot Plot

• Line Graph

• Histogram

• Bar Graph

What is a key feature of a good survey?

• Predicting outcomes

• Manipulating variables

• Using a control group

• Having a clear objective