Data Comparison and Measures of Spread

What is the primary focus of this lesson on data comparison?

• Focusing solely on the mean and median.

• Learning to use every statistic available.

• Understanding the importance of data visualization.

• Using appropriate measures of center and spread.

Which of the following is NOT a measure of center?

• Standard Deviation

• Mean

• Mode

• Median

What are good descriptors to use when comparing measures of spread?

• Higher or lower

• Bigger or smaller

• More compact or more spread out

• Greater than or less than

When should you choose median and IQR over mean and standard deviation?

• When the data has no variation.

• When the data is perfectly symmetrical.

• When there are outliers or skewed data.

• When the data is normally distributed.

What should you inspect in the data to decide on the appropriate measure of center and spread?

• The number of data points.

• The presence of outliers.

• The data collection method.

• The color of the data points.

What does a smaller standard deviation indicate about a data set?

• The data is more compact.

• The data is more spread out.

• The data is skewed.

• The data has more outliers.

In the comparison of aluminum and plastic recycling, which has a larger mean?

• Aluminum recycling

• Plastic recycling

• Both have the same mean

• Neither has a mean

What is the significance of using the same scale in histograms for comparison?

• It makes the data look more colorful.

• It simplifies the data collection process.

• It ensures accurate comparison.

• It highlights the outliers.

How can you identify the standard deviation in a histogram?

• By counting the number of bars.

• By looking at the tallest bar.

• By finding the mean line.

• By identifying the negative 1s and 1s.

What conclusion can be drawn from the histogram comparison of aluminum and plastic recycling?

• Plastic recycling has a smaller mean.

• Aluminum recycling is more spread out.

• Plastic recycling is more compact.

• Aluminum recycling has a larger mean and is more compact.