Exam 2: Frequency Distributions.

The normal distribution is an example of

For the following frequency distribution of exam scores,what is the lowest score on the exam? X 90-94 3 85-89 4 80-84 5 75-79 2 70-74 1

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?

For the following distribution,what is the width of each class interval? X f 20-24 2 15-19 5 10-14 4 5-9 1

If a set of scores is displayed in a frequency distribution polygon,what scale of measurement was used to measure the scores?

For the following scores,construct a grouped frequency distribution table using an interval width of 10 points.Based on the table,what is the shape of the distribution? 30,23,58,28,35,67,74,59,27,42,46,35 51,33,18,33,25,38,48,36,31,39,63,40

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 a high of X = 72 to a low of X = 28.If these scores were put in a grouped frequency distribution table,what would be the best choice for the interval width?

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

Find each value requested for the set of scores in the following frequency distribution table. X f 5 2 4 2 3 3 2 5 1 2 a.N b.ΣX c.ΣX²

For the following distribution,how many people have scores greater than X = 14? 20-24 2 15-19 5 10-14 4 5-9 1

If a set of scores is displayed in a frequency distribution bar graph,what scale of measurement was used to measure the scores?

For the following frequency distribution of exam scores,how many students had scores higher than X = 79? X 90-94 3 85-89 4 80-84 5 75-79 2 70-74 1

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.

If a distribution with more than 15 or 20 possible scores is being organized in a frequency distribution table,a grouped table should be used.

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

What is the total number of scores for the distribution shown in the following table? X 4 3 3 5 2 4 1 2

What frequency distribution graph is appropriate for scores measured on a nominal scale?

A set of scores ranging from a high of 47 to a low of 6 is organized in a grouped frequency distribution table using an interval width of 5 points.If the distribution is shown in a graph,then a histogram or polygon should be used.

In a frequency distribution graph,frequencies are presented on the ,and the scores (categories)are listed on the .