Exam 2: Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Refer to the following breakdown of responses to a survey of "Are you concerned about being tracked while connected to the Internet?" What is the class interval for the preceding frequency table?

A group of 100 students was surveyed about their interest in a new International Studies program. Interest was measured in terms of high,medium,or low. In the study,30 students responded high interest,40 students responded medium interest,and 30 students responded low interest. What is the relative frequency of students with high interest?

A frequency table for qualitative data has class limits.

Refer to the following frequency distribution of days absent during a calendar year by employees of a manufacturing company: How many employees were absent for 6 up to 12 days?

In order to convert class frequency to relative class frequency,we

Refer to the following frequency distribution of days absent during a calendar year by employees of a manufacturing company: How many employees were absent for 3 up to 6 days?

In frequency distributions,classes are mutually exclusive if each individual,object,or measurement is included in only one category.

Refer to the following breakdown of responses to a survey of room service in a hotel: What percentage of the responses indicated that customers were satisfied?

Refer to the following breakdown of responses to a survey of "How confident are you that you saved enough to retire?" What percentage of the responses indicated that users were very confident?

Refer to the following frequency distribution of days absent during a calendar year by employees of a manufacturing company: How many employees were absent six or more days?

Refer to the following distribution of ages: For this distribution of ages,what is the relative class frequency for the lowest class?

Refer to the following breakdown of responses to a survey of room service in a hotel: What is the class with the greatest frequency?

A pie chart is similar to a relative frequency distribution.

To convert a frequency distribution to a relative frequency distribution,divide each class frequency by the number of classes.

A small sample of computer operators shows monthly incomes of $1,950,$1,775,$2,060,$1,840,$1,795,$1,890,$1,925,and $1,810. What are these ungrouped numbers called?

Refer to the following wage breakdown for a garment factory: What is the class interval for the preceding table of wages?

For the following distribution of heights,what are the limits for the class with the greatest frequency?

A table summarizing a set of data showing the fraction of the total number of items in several classes is a

A cumulative frequency distribution is used when we want to determine how many observations lie above or below certain values.

The relative frequency for a class represents the