Stats 2

which of the following does not need to be done when constructing a frequency distribution? a.) select the number of classes desired b.) use classes that are mutually exclusive c.) make the class width an even number d.) find the range

When data are collected in original form, they are called __________.

The ______ of a specific class is the number of data values contained in it

If a frequency distribution had class boundaries of 132.5-147.5, what would be the class width?

for the class 10-20, the upper class limit is

what are the boundaries of class 11-17?

In an ungrouped frequency distribution of the average age of high school graduates, what would be the boundaries for the class of graduates who were reported to be 18 years old?

what is the midpoint of the class 7-11?

Greg wants to construct a frequency distribution for the political affiliation of the employees at Owen's Hardware Store. What type of distribution would be best?

what is lower class limit of the class 13-17?

which of the following pairs of class limits would be appropriate for grouping the numbers 13, 16, 11, and 18? a.) 11-13 and 14-18 b.) 11-14 and 15-18 c.) 11-13 and 16-18 d.) 10-14 and 14-18

Thirty students recorded the colors of their eyes, choosing from the colors brown, blue, green, hazel, and black. This data can be appropriately summarized in a

what are the boundaries of the class 1.87-3.43?

for the class 16.3-23.8, the width is 8.5, T or F

When the range is large and classes that are several units in width are needed, a __________ frequency distribution is used.

the cumulative frequency for a class is the sum of the frequencies of the classes less than and equal to the upper boundary of the specific class, T or F

An ogive is also called a cumulative frequency graph. T or F

the three most commonly used graphs in research are the histogram, the __________, and the cumulative frequency graph (ogive)

the frequency polygon and the histogram are two different ways to represent the same data set, T or F

For a given data set, the ogive and the frequency polygon will have the same overall shape, T or F

For a given data set, the ogive and the frequency polygon will have the same overall shape, T or F

graphs the show distribution using proportions instead of raw data as frequencies are called _______________ _____________ _________

the frequency polygon is a graph that displays the data by using lines that connect point plotted for the frequencies at the midpoint of the classes. T or F

If the graph of a frequency distribution has a peak and the data tapers off more slowly to the right and more quickly to the left the distribution is said to be ____________________