Question 1
0 out of 5 points
What indicates the number of scores that fell below the upper real limit of each interval?
Question 2
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 real limits of the interval 56-65 are _________.
Question 3
5 out of 5 points
What indicates the proportion of the total number of scores that occurred in each interval?
Question 4
5 out of 5 points
A curve is negatively skewed when _________.
Question 5
5 out of 5 points
A percentile point is defined as _________.
Question 6
0 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 7
0 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 cumulative frequency for the interval 6.0-6.3 is _________.
Question 8
5 out of 5 points
Given the distribution of grouped scores shown in the following table.
How many occurrences are there for the interval 60-69?
Question 9
0 out of 5 points
Your new Mercedes weighs 1850 kilograms when measured to the nearest kilogram. The real limits of its weight are _________.
Question 10
0 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 11
0 out of 5 points
If i = 7, the scores are integer, and the minimum value of the distribution of scores is 8, what would the lowest class interval be?
Question 12
0 out of 5 points
Interval or ratio data may be plotted as a _________.
Question 13
0 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 14
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 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 below arranged in a frequency distribution of grouped scores.
The real limits of the interval 6.4-6.7 are _________.
Question 16
5 out of 5 points
The true limits of 7.0 are _________.
Question 17
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 cumulative percentage for the interval 5.2-5.5 is _________.
Question 18
0 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.
The percentile rank of a score of 6.5 is _________.
Question 19
5 out of 5 points
The purpose of a frequency distribution is to _________.
Question 20
5 out of 5 points
Given the distribution of grouped scores shown in the following table.
What is the value of i?
