Median- middle-most value of a data set; 50% of the data is ess than this value, and 50% is greater than it
100
What is the definition of an outlier?
outlier- a data value that is much greater than or much less than the rest of the data in a data set
100
Find the first and third quartile for this set of numbers.
5,6,7,12,15,16,18
first quartile- 6
third quartile-16
100
a plot showing the minimum, maximum, first quartile, median, and third quartile of a data set; the middle 50% of the data is indicated by a box.
What is a box plot?
200
what is the median of these numbers?
12,14,15,18,17,19,20,10
The median is 16!
200
what is the outlier for this set of numbers?
12,13,14,15,16,19,20,54
The outlier is 54
200
What is the IQR for this set of numbers?
11,12,13,14,15,16,17,18,19,20
5 is the IQR!
200
the difference between the third and first quartiles
What is interquartile range? (IQR)
300
What is the definition of the mean.
Mean- the average value of a data set, found by summing all values and dividing by the number of data points.
300
What is the formula for finding outliers?
less than Q 1 -1.5(IQR) or greater than Q + 1.5(IQR) is an outlier .
300
All the students in a class took a French test
There are 15 boys in the class
The boys gained these marks in the test
4, 5, 7, 8, 10, 11,11 ,12, 13, 14, 15 ,17,18,18,20
--Find the IQR!--
The IQR is 9
300
a frequency plot that shows the number of times a response occurred in a data set, where each data value is represented by a dot.
What is a dot plot?
400
what is the mean for this set of numbers?
15,17,15,16,12,13,18,19,21,22
16.8 is the mean!
400
Find the outlier(s) for this set of numbers.
12,13,14,15,16,17,18,20,29,36,45
The outliers are 29,36,45
400
what is the IQR for this set of numbers.
8,9,10,12,14,14,16,17,18,19,19
and explain how you got your answer.
the IQR is 8.
400
data concentrated on the higher values in the data set, which has a tail to the left.
What is skewed to the left?
500
What is the mean absolute deviation for this set of numbers?
40,42,43,45,47,49,50,53,54,58
4.7 is the mean!
500
What are the outlier(s) for this set of numbers?
33,35,36,37,39,40,45,46,58
there are NO outliers!
500
Find the median, first quartile, third quartile, and the IQR
31,32,33,33,34,35,36,37,37,38,39
Median-35
first quartile-33
third quartile-37
IQR-4
500
values that describe expected and repeated data values in a data set; the mean and median are two examples