Statistical Concepts and Data Analysis

Mr. Bell introduces key vocabulary for a statistics unit, covering statistical questions, frequency tables, outliers, and measures of central tendency like mean, median, mode, and range. He explains data characteristics such as numeric data, spread, and variability, and discusses data displays including dot plots, box plots, and histograms.

What is the primary focus of the vocabulary section in this unit?

• To memorize all terms

• To understand key statistical concepts

• To learn about historical figures in statistics

• To practice mathematical calculations

What characterizes a statistical question?

• It involves data collection and variability

• It can be answered without data

• It has a single correct answer

• It is based on historical data

What does a frequency table display?

• The median of a data set

• The mode of a data set

• The frequency of various outcomes

• The average of data points

What is an outlier in a data set?

• A data point that is the average

• A data point that is the median

• A data point that is the mode

• A data point that is distinctly separate

How is the mean of a data set calculated?

• By finding the middle value

• By summing the numbers and dividing by the count

• By identifying the most frequent number

• By subtracting the smallest number from the largest

What is the median in a data set?

• The middle value when data is ordered

• The sum of all numbers divided by the count

• The difference between the largest and smallest numbers

• The most frequently occurring number

What does the mode represent in a data set?

• The middle value

• The range of the data set

• The average of all numbers

• The most frequently occurring number

How is the range of a data set determined?

• By finding the average

• By identifying the middle value

• By subtracting the smallest number from the largest

• By counting the number of data points

What is numerical data?

• Data that is always negative

• Data that is always positive

• Data that can be measured and ordered

• Data that can be categorized

What does 'spread' refer to in a data set?

• The average value

• The middle value

• The distance of data points from the mean or median

• The range of data points