Statistics / Data Vocabulary

What does Q1 represent in a data set?

• Q1 is the highest value in the data set.

• Q1 represents the mean of the data set.

• Q1, or the lower quartile, represents the median of the lower half of the data.

• Q1 is the difference between the highest and lowest values.

How do you find the median of a data set with an even number of values?

• Average the two middle numbers.

• Take the largest number in the set.

• Select the smallest number in the set.

• Use the mode of the data set.

What is a box plot?

• A graphical representation that summarizes a data set using five values: minimum, Q1, median (Q2), Q3, and maximum.

• A type of chart that displays the frequency of data points in a dataset.

• A diagram that shows the relationship between two variables in a dataset.

• A visual representation of the mean and standard deviation of a dataset.

What does it mean if data is skewed left?

• The left tail of the distribution is longer or fatter than the right tail.

• The right tail of the distribution is longer or fatter than the left tail.

• The data is evenly distributed with no skewness.

• The mean is greater than the median.

What is the five-number summary?

• The average, median, mode, range, and standard deviation of a data set.

• The minimum, Q1, median (Q2), Q3, and maximum of a data set.

• The sum of all data points divided by the number of points.

• The highest and lowest values in a data set.

What is a histogram?

• A graphical representation of the distribution of numerical data, using bars to show the frequency of data within certain ranges.

• A type of chart that displays data in a circular format.

• A method for calculating the mean of a data set.

• A visual representation of categorical data using lines.

What does Q3 represent in a data set?

• The lower quartile of the data set.

• The median of the entire data set.

• The median of the upper half of the data.

• The average of all data points.

What is a statistical question?

• A question that has a single, definitive answer.

• A question that anticipates variability in the data and expects a variety of answers.

• A question that can only be answered with a yes or no.

• A question that requires no data to answer.

What is the median of a data set?

• The average of all values in the data set.

• The middle value when the data is ordered from least to greatest.

• The highest value in the data set.

• The lowest value in the data set.

What does it mean for data to be symmetrical?

• Data is symmetrical if it is evenly distributed around the center, meaning the left and right sides are mirror images.

• Data is symmetrical if it has a normal distribution with a single peak.

• Data is symmetrical if it contains no outliers or extreme values.

• Data is symmetrical if it can be represented in a circular format.