Question 1
5 out of 5 points
Which of the following is (are) not a symmetrical distribution?
Question 2
5 out of 5 points
Given the distribution of grouped scores shown in the following table. The percentile rank of a score of 41 equals _________.
Question 3
5 out of 5 points
When constructing bar graphs, the bars do not touch each other because _______.
Question 4
5 out of 5 points
Assume your task is to group the raw scores given below into a frequency distribution of approximately 12 intervals of equal width.
The interval containing the most scores is _________.
Question 5
5 out of 5 points
If a large psychology class took a test on theoretical biophysics, the distribution of scores would probably be _________.
Question 6
5 out of 5 points
A researcher has collected some data on the amount of time in seconds (to the nearest 0.1 second) that it took trained rats to run through a maze. The data is shown below arranged in a frequency distribution of grouped scores.
The 75th percentile point is _________.
Question 7
5 out of 5 points
Assume your task is to group the raw scores given below into a frequency distribution of approximately 12 intervals of equal width.
The lowest class interval is _________.
Question 8
5 out of 5 points
A curve is negatively skewed when _________.
.
Question 9
0 out of 5 points
Given the distribution of grouped scores shown in the following table. What is the cumulative percentage below the lower real limit of the interval 90-99?
Question 10
5 out of 5 points
If a curve is symmetrical, _________.
Question 11
5 out of 5 points
Consider the following stem-and-leaf diagram.
1
2
2
1 3
3
2 4 6 7
4
2 3 5 6 8
5
1 3 4 4 5 6 8
6
3 3 3 5 6 7 8 8 9 9 9
7
2 2 2 3 3 4 5 5 5 6 6 7 7 7
8
1 1 1 2 3 3 4 4 5 5 5 6 6 6 6
9
2 2 2 3 3 4 4 5 5 5 6 6 7
This score distribution is _______.
Question 12
5 out of 5 points
Consider the following score diagram.
1
2
2
1 3
3
2 4 6 7
4
2 3 5 6 8
5
1 3 4 4 5 6 8
6
3 3 3 5 6 7 8 8 9 9 9
7
2 2 2 3 3 4 5 5 5 6 6 7 7 7
8
1 1 1 2 3 3 4 4 5 5 5 6 6 6 6
9
2 2 2 3 3 4 4 5 5 5 6 6 7
This score diagram is called a _________.
Question 13
5 out of 5 points
A psychologist is interested in the social interactions of preschool children. She measures the number of verbal interactions that each child at a preschool engages in during a day. Here is the frequency distribution of the data.
The cumulative % for the interval 46-55 is _________.
Question 14
5 out of 5 points
Consider the following stem-and-leaf diagram.
1
2
2
1 3
3
2 4 6 7
4
2 3 5 6 8
5
1 3 4 4 5 6 8
6
3 3 3 5 6 7 8 8 9 9 9
7
2 2 2 3 3 4 5 5 5 6 6 7 7 7
8
1 1 1 2 3 3 4 4 5 5 5 6 6 6 6
9
2 2 2 3 3 4 4 5 5 5 6 6 7
If the numbers in the left column are deciles, the median of the distribution falls in the range of _______.
Question 15
5 out of 5 points
A researcher has collected some data on the amount of time in seconds (to the nearest 0.1 second) that it took trained rats to run through a maze. The data is shown in the frequency distribution of grouped scores that follows.
Question 16
5 out of 5 points
Your new Mercedes weighs 1850 kilograms when measured to the nearest kilogram. The real limits of its weight are _________.
Question 17
5 out of 5 points
A psychologist is interested in the social interactions of preschool children. She measures the number of verbal interactions that each child at a preschool engages in during a day. The resulting data are shown in the following frequency distribution.
The relative frequency for the interval 76-85 is _________.
Question 18
5 out of 5 points
When individual scores are combined into groups, _________.
Question 19
5 out of 5 points
An accountant is preparing a graph showing the number of sports cars of various makers purchased this year. The number will be plotted on the ordinate and the various manufacturers on the abscissa. The proper type of graph for this data is a(n) _________.
Question 20
5 out of 5 points
Assume your task is to group the raw scores given below into a frequency distribution of approximately 12 intervals of equal width.
The value of i is _________.
