Exam 2: Describing Data: Frequencydistributions and Graphic Presentation

Quinn's Café serves ice cream. She asks 100 of her regular customers to take a taste test and pick The flavour they like the best. The results are shown in the following table. Is the data quantitative or qualitative? What is the name of the table shown?

A group of 100 students were surveyed about their interest in a new International Studies program. The survey asked students about their interest in the program in terms of high, medium, or low. 30 Students responded high interest; 50 students responded medium interest; 20 students responded Low interest. What is the relative frequency of students with low interest?

The grades on a statistics exam for a sample of students are as follows: If A + = 90%-100% A = 80%-89% B+ = 75%-79% B = 70%-74% C+ = 65%-69% C = 60%-64% D = 55%-59% F = 0%-54% How many student earned a letter grade of C?

When data is collected using a qualitative, nominal variable, i.e., male or female, what is true about a Frequency distribution that summarizes the data?

(i. A frequency table is a grouping of qualitative data into mutually exclusive classes showing the Number of observations in each class. (ii. Simple bar charts may be constructed either horizontally or vertically. (iii) A bar chart is a graphic representation of a frequency table.

The grades on a statistics exam for a sample of students are as follows: If A + = 90%-100% A = 80%-89% B+ = 75%-79% B = 70%-74% C+ = 65%-69% C = 60%-64% D+ = 55%-59% D= 50%-54% F=0-49% What is the most common letter grade earned?

What percentage of the firms export less than $14 million in product?

When a class interval is expressed as: 100 to under 200

What is the class interval? _____

The chart below shows the Gross Domestic Product for 7 nations. Which of the following statements Can be determined from this chart?

Which is the best (most informative and useful) graphical display of the Average Weekly Earnings Health Care in Canada over the years 2008 to 2012?

(i. A table showing the number of observations that have been grouped into each of several classes Is called a frequency distribution. (ii. When classes in a frequency table are constructed so that data will fit into only one category, it is Called mutually exclusive. (iii) The best means to display data that is based on a trend over a period of time is the polygon.

Why are unequal class intervals sometimes used in a frequency distribution?

The grades on a statistics exam for a sample of students are as follows: If A = 80%-100% B = 70%-79% C = 60%-69% D= 50%-59% F=0-49% What is the most common letter grade earned?

How many employees were absent fewer than six days?

(i. A table showing the number of observations that have been grouped into each of several classes Is called a frequency distribution. (ii. When classes in a frequency table are constructed so that data will fit into only one category, it is Called a relative class frequency. (iii) The suggested class interval based on number of observations given the data ranges from 100 To 200 with 50 observations is 50.

The following ages (rounded to the nearest whole year) of employees at a large company that were Grouped into a distribution with class limits: 20 up to 30 30 up to 40 40 up to 50 50 up to 60 60 up to 70 (i. The class limits for the class 50 up to 60 class are 50 and 58. (ii. The midpoint for the class 40 up to 50 is 45. (iii) The class interval is 9.

A sample distribution of hourly earnings in Paul's Cookie Factory is: The limits of the class with the smallest frequency are:

How many employees were absent six or more days?

What is the class midpoint for the class with the greatest frequency?