Vocabulary
Qualitative or Quantitative:
The candy was red.
Qualitative
What are the measures of central tendency?
mean, median, and mode
Find the range:
2, 7, 6, 10
8
What is the minimum and maximum?
5, 6, 1, 2, 8, 1, 3, 2
Max: 8
Population or Sample:
All of the students in 7th grade.
Population
Find the median
2, 7, 6
6
How do you find interquartile range?
Q3 - Q1
Jack is running for student council president of her grade. He would like to poll how the students will vote on election day. Which of the following samples is best for this situation?
A poll of his baseball teammates
A poll of the boys in his grade
A random sample of fifty students in a different grade
A random sample of fifty students in his grade
A random sample of fifty students in a different grade
What is a median?
The number in the middle.
Find the mode
5, 6, 1, 2, 8, 1, 3, 2
1 and 2
Find the interquartile range based on the information given below:
Quartile 1 = 20
Median = 25
Quartile 3 = 35
15
What is the difference between qualitative data and quantitative data?
Quantitative data is based on numbers. Qualitative data is based on descriptions.
The number that occurs the most often.
Mode
Find the mean:
64, 69, 72, 54, 89, 92, 54, 32
65.8
Find the interquartile range,
2, 3, 5, 6, 7, 9, 10
6
Is there an outlier, if so what is it?
64, 69, 72, 54, 89, 20, 54, 80
20
How do you calculate the mean?
Add up all the numbers and divide by the total amount of numbers.
Find the mean, median, and mode
81, 79, 83, 76, 89, 75, 67, 83, 65, 74, 78
mean = 77.3; median = 78; mode = 83
64, 69, 72, 54, 89, 92, 54, 32
Q1 = 54
Q3 = 80.5
What are the parts of a box and whisker plot?
Minimum, Maximum, Quartile 1, Median, Quartile 3