Sophia Unit 2 Milestone 2 Test Questions
And Answers Latest Study Solutions
,22/25 that's 88%
RETAKE
22 questions were answered correctly.
3 questions were answered incorrectly.
1 Range and Interquartile Range (IQR)
Select the statement that is TRUE.
• The interquartile range is calculated by subtracting the first quartile from the third
quartile.
• The interquartile range covers 100% of a data set.
• The interquartile range is calculated by adding the first quartile with the third quartile.
• The interquartile range is the average value of a data set.
RATIONALE
Recall that the interquartile range is the difference between Q3 and Q1 and can be
calculated by subtracting the first quartile from the third quartile:
2 Mean, Median, and Mode
A class of 20 students have one week to complete a math assignment of 30 questions. At
the end of the first day, the students had completed the following number of questions:
5, 7, 4, 6, 1, 8, 9, 4, 4, 5, 10, 4, 6, 5, 3, 6, 5, 6, 0, 2
How many modes are in the given data set?
• 4
• 5
• 2
• 3
, RATIONALE
The mode is the most frequently occurring value. In this dataset 4, 5, and 6 each occur 4
times. So there are three modes or we say the dataset is trimodal.
3 Cumulative Frequency
Sara wonders what percentage of her students answered at least half of the quiz
questions incorrectly.
The relative cumulative frequency of students who earned a score of 21 or higher on the
quiz is __________.
32%
• 18%
• 16%
• 68%
RATIONALE
To get the relative cumulative frequency of 21 or greater, we need to first find the
cumulative number of 21 or more. We simply add up any bin that has the number 21 or
more, such as the bin that shows scores of 21-25, 26-30, 31-35, and 36-40.
This would be:
And Answers Latest Study Solutions
,22/25 that's 88%
RETAKE
22 questions were answered correctly.
3 questions were answered incorrectly.
1 Range and Interquartile Range (IQR)
Select the statement that is TRUE.
• The interquartile range is calculated by subtracting the first quartile from the third
quartile.
• The interquartile range covers 100% of a data set.
• The interquartile range is calculated by adding the first quartile with the third quartile.
• The interquartile range is the average value of a data set.
RATIONALE
Recall that the interquartile range is the difference between Q3 and Q1 and can be
calculated by subtracting the first quartile from the third quartile:
2 Mean, Median, and Mode
A class of 20 students have one week to complete a math assignment of 30 questions. At
the end of the first day, the students had completed the following number of questions:
5, 7, 4, 6, 1, 8, 9, 4, 4, 5, 10, 4, 6, 5, 3, 6, 5, 6, 0, 2
How many modes are in the given data set?
• 4
• 5
• 2
• 3
, RATIONALE
The mode is the most frequently occurring value. In this dataset 4, 5, and 6 each occur 4
times. So there are three modes or we say the dataset is trimodal.
3 Cumulative Frequency
Sara wonders what percentage of her students answered at least half of the quiz
questions incorrectly.
The relative cumulative frequency of students who earned a score of 21 or higher on the
quiz is __________.
32%
• 18%
• 16%
• 68%
RATIONALE
To get the relative cumulative frequency of 21 or greater, we need to first find the
cumulative number of 21 or more. We simply add up any bin that has the number 21 or
more, such as the bin that shows scores of 21-25, 26-30, 31-35, and 36-40.
This would be:
