What is the median?
The middle number in a set of data
In the set of data,
11, 14, 16, 18, 20, 23, 26. What is the number 14?
The lower quartile (Q1)
What is the interquartile range in this box and whisker plot?
70-30= 40
What is the mean of this data set? ROUND TO THE NEAREST HUNDREDTH
14, 87, 27, 48, 12, 23
35.17
Clara's school sold raffle tickets to raise money for new athletic equipment. By the end, 7 students sold:
7 tickets, 4 tickets, 2 tickets, 4 tickets, 6 tickets, 3 tickets, 6 tickets
What was the median number of raffle tickets sold?
4 tickets
What is the five number summary? List all 5.
The maximum, minimum, lower quartile, upper quartile and median
What is the number 50.5 in the data set 34, 56, 45, 24, 12, 33
the upper quartile (Q3)
What is the lower quartile (Q1) in this box and whisker plot?
40
What is the standard deviation of this data set? ROUND TO THE NEAREST HUNDREDTH
12, 15, 13
1.25
Factor. Then solve to find the zeros.
u2+6u+5
(u + 1)(u + 5) u= -1 and -5
What is the interquartile range?
The difference between the upper quartile and lower quartile
What is the number 106.5 in the data set
143, 101, 180, 156, 112, 123
the lower quartile
What percent of student scored below 70?
75%
You survey several students to determine the average number of books read per month. What is the mode?
7 and 9
Solve for n.
-3n − 3 = 7 − 4n
n = 10
What is the lower quartile?
The median of the lower half of the set of data
In this set of data, what is the number 45?
13, 15, 19, 32, 79, 23, 60
The interquartile range (IQR)
Draw a box plot representing the data
25, 40, 45, 47, 48, 50, 75
Tim decides to play basketball, so you record the number of points he gets during the game. He makes 2 shots from behind the 3point line (worth 3pts), 4 shots inside the 3point line (worth 2 pts) and 2 free throws (worth one pt). What is the average number of points per throw he got?
2 points average per throw
What is the mean?
0, -3, 2, 0, -2, -3, 4, -6
mean: -1
Where is the middle 50% of the population located on the box and whisker plot?
Within the box; between the lower and upper quartiles
What is the number 40 in the data set 63, 14, 23, 78, 28, 58
The interquartile range (IQR)
What is the Upper Quartile (Q3)?
85, 78, 98, 69, 94, 90, 80
Find the number of terms and the degree of this polynomial.
-3m7 + 9m3 − m2 + 3m + 1
Terms: 5 Degree: 7
Identify the outlier.
5, 58, 57, 46, 59, 42, 55, 61, 65, 53
If the outlier were removed from the data set, would the mean increase or decrease?
Outlier: 5 Mean would increase if 5 was eliminated.