Exam 2: Summarizing Data: Frequency Distributions in

Frequency distributions can be used to summarize both grouped and ungrouped data.

Which of the following requires the calculation of a real range?

A cumulative frequency distribution is the sum of frequencies across a series of intervals.

Bar charts are a lot like histograms,except

What is the percentile point at the 90^th percentile in the following distribution?

To construct a pie chart,first distribute the data as

The following is a simple frequency distribution table.If we convert this frequency distribution to relative percentages,which of the following gives the corresponding percentages in each interval listed from the top down.

Cumulative percent data can be summarized using an ogive.

A histogram is used to summarize grouped data.

In a bar chart,each class or category is represented by a rectangle,and each rectangle is separated (does not touch)along the x-axis.

Which of the following is a type of graphical display used to summarize qualitative,discrete data?

A relative frequency distribution is appropriate when

The percentile rank of a score is the percentage of scores with values that fall below a specified score in a distribution.

State the type of graphical display for Graph A and Graph B.

When cumulating frequencies from the top down,the data are discussed in terms of

A researcher measures the time (in seconds)that it takes children to complete a basic reading skills task.What type of graphical display would be most appropriate for summarizing the frequency of children falling into different intervals of time?

Fill in the missing values for A and B in this frequency distribution table:

A percentile is also called a:

Grouped data are to ungrouped data as

The data should be grouped for the following data set: 0,0,0,2,2,1,1,2,2,2,1,0,0,0,0,2,2,1,1,1,2,1,2,2,0,0,1,and 2.