Exploring Normal Distribution Concepts

What is the definition of a batting average?

• The number of home runs a player hits.

• The number of hits a player achieves divided by the number of at-bats.

• The number of games a player plays.

• The number of runs a player scores.

How do you create a dot plot for a given set of data?

• By using a pie chart.

• By creating a bar chart.

• By posting dots at the values on a number line.

• By drawing a line graph.

What does it mean if the mean is less than the median in a data set?

• The distribution is uniform.

• The distribution is skewed to the left.

• The distribution is skewed to the right.

• The distribution is symmetrical.

Which of the following best describes a bell curve?

• A curve that is skewed to the left.

• A curve that is skewed to the right.

• A symmetrical curve that looks like a bell.

• A curve with multiple peaks.

What is the relationship between the mean and median in a perfectly symmetrical distribution?

• There is no relationship.

• The mean is less than the median.

• The mean is equal to the median.

• The mean is greater than the median.

What does standard deviation measure in a data set?

• The median value of the data set.

• The amount of variance between data points.

• The total number of data points.

• The average value of the data set.

Which team had the largest standard deviation in their batting averages?

• Cobras

• Manatees

• Turtles

• Snappers

What is a density curve?

• A curve that represents the distribution of a data set.

• A curve that shows the relationship between two variables.

• A curve that shows the median of a data set.

• A curve that represents the mean of a data set.

What does a positive Z-score indicate?

• The value is below the mean.

• The value is equal to the mean.

• The value is above the mean.

• The value is at the median.

Which characteristic of the python was more unusual based on the Z-scores?

• Its length

• Its weight

• Its age

• Its color