Year 9 Unit 7

What is the definition of "mean" in statistics?

• The middle value when data is ordered.

• The most frequently occurring value in a data set.

• The total sum of all values divided by the number of values.

• The difference between the highest and lowest values.

What does "cumulative frequency" refer to?

• The most common value in a data set.

• A running total of frequencies.

• A list of all values in order.

• The range between the smallest and largest values.

Which term describes a range of values in a grouped frequency table, like "10-19" or "20-29"?

• Midpoint

• Class Interval

• Frequency

• Mode

What is an "outlier" in a data set?

• A value that occurs most often.

• A value that falls within the most frequent class.

• A value that does not fit the pattern of the data.

• A running total of frequencies.

In a frequency table, what does "frequency" refer to?

• The total number of values in the data set.

• The number of times a specific value appears in the data set.

• The difference between the highest and lowest values.

• The most common value in the data set.

What is meant by "grouped data"?

• Data that has been organized into individual values.

• Data that has been organized into specific groups or classes.

• Data that has been sorted in numerical order.

• Data that shows the frequency of each individual value.

Which of the following best describes the "median"?

• The difference between the highest and lowest values.

• The middle value of a set of data when it is ordered.

What is a "mode" in a data set?

• The middle value when data is arranged in order.

• The value that appears most often.

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

• The difference between the highest and lowest values.

What does the "range" of a data set refer to?

• The number of values in the data set.

• The difference between the smallest and largest values.

• The most frequent value.

• The middle value when data is ordered.

What is the purpose of using a "random sample"?

• To include only the most common data values.

• To ensure every member of the population has an equal chance of being selected.

• To gather all data from the population.

• To focus on specific values that are most important.