Exam 2: Frequency Distributions

A frequency distribution graph represents frequencies with vertical bars without space between them.What scale of measurement was used to measure the scores?

A grouped frequency distribution table lists one interval as,20-29.The width of this interval is 9 points.

A set of scores ranges from a low of X = 18 to a high of X = 98.If the scores are put in a grouped frequency distribution table with an interval width of 10 points,the bottom interval should be 10-19.

A researcher surveys a sample of n = 200 college students and asks each person to identify his or her favorite movie from the past year.If the data were organized in a frequency distribution table,the first column would be a list of movies.

The scores for a very easy exam would probably form a positively skewed distribution.

In February in New York,the daily high temperatures are typically low with only a few relatively warm days.A frequency distribution showing the daily high temperatures would probably form a negatively skewed distribution.

A researcher surveys a sample of n = 200 college students and asks each person to identify his or her favorite movie from the past year.If the data were organized in a frequency distribution table,what would be listed in the first column?

If a set of exam scores forms a negatively skewed distribution,it suggests that the majority of the students did not score well on the exam.

A histogram is constructed so that adjacent bars touch.

If a distribution of scores is shown in a bar graph,you know that the scores were measured on a(n)_________ scale of measurement.

Briefly explain what information is available in a regular frequency distribution table that is not available in a grouped table.

A grouped frequency distribution table does not provide enough information to obtain a complete listing of the original set of scores.

A skewed distribution typically has _____ tail(s)and a normal distribution has ____ tail(s).

In a grouped frequency distribution table,one interval is identified as 30-34.This interval has a width of 5 points.

A researcher surveys a sample of n = 200 college students and asks each person to identify his or her favorite movie from the past year.If the results were presented in a frequency distribution graph,what kind of graph would be appropriate?

A set of scores ranges from X = 18 to X= 91.If the scores were put in a grouped frequency distribution table with an interval width of 10 points,the top interval would be 91-100.

The students in a psychology class seemed to think that the midterm exam was very easy.If they are correct,what is the most likely shape for the distribution of exam scores?

What term is used to describe the shape of a distribution in which the scores pile up on the left-hand side of the graph and taper off to the right?

A biologist records the number of trout,bass,perch,and other types of fish caught in a local lake during a 2-week period.If the results are organized in a frequency distribution table,what values would be listed in the first column?

The classrooms in the Psychology department are numbered from 100 to 108.A professor records the number of classes held in each room during the fall semester.If the results were presented in a frequency distribution graph,the professor should use a bar graph.