Data Analysis Quiz

What is the significance of the mode in a data set?

• It represents the most frequently occurring value.

• It represents the average value.

• It represents the middle value.

• It represents the maximum value.

In a dot plot, what does each dot represent?

• An outlier

• A data point

• The mean

• The mode

Which statistical measure is most affected by outliers?

• Mean

• Median

• Mode

• Range

What is the primary purpose of constructing a two-way frequency table?

• To compare two different sets of data

• To visualize data using graphs

• To organize data into categories

• To calculate the mean and median of a data set

Which statistic measures the center of a data set?

• Mean

• Median

• Mod

• Range

What is the shape of the data displayed in a dot plot?

• Bell-shaped

• Skewed left

• Skewed right

• Uniform

What is the purpose of comparing the centers and spreads of data displayed in dot plots?

• To determine the shape of the data

• To identify outliers

• To understand the distribution of the data

• To calculate the variance

Which measure of spread is resistant to outliers?

• Range

• Interquartile Range (IQR)

• Standard Deviation

• Variance

Which of the following statements about box plots is true?

• The whiskers always represent the range of the data.

• The length of the box represents the range of the data.

• The median is represented by the line inside the box.

• The box plot cannot show outliers.

The mean is always affected by outliers in a data set.

• TRue

• False