Find the Standard Deviation of:
34, 15, 23, 25, 43, 28, 23
Round to the nearest tenth.
9.0
100
Draw a box plot from the given five-number summary
min: 3, max: 18, median: 12, Q1: 6, Q3: 16
100
Find the IQR for the five-number summary below:
Q1: 7, median: 9, Q3: 12, Min: 2, Max: 14
5
100
What does IQR stand for? And how to do you find it?
"interquartile range"; Q3 - Q1
200
Find the range of:
45, 65, 12, 87, 65, 98, 62, 55, 27
98 - 12 = 86
200
Find the standard deviation of:
112, 68, 45, 78, 56, 61, 93, 72
Round to the nearest thousandth.
21.344
200
Find the five-number summary for the following set of data:
1, 1, 2, 4, 7, 9, 9, 9, 13, 13
min: 1, max: 13, median: 8, Q1: 2, Q3: 9
200
A data set has a third quartile of 62 and first quartile of 27. What are the upper and lower boundary values that separate outliers from the rest of the data set?
Lowerbound = -25.5
Upperbound = 114.5
200
What is the five-number summary for a box plot?
min, max, median, Q1, and Q3
300
What is the mean (average) of:
5, 8, 9, 6, 4, 5, 2, 1
total = 40 / 8 = 5
300
Find the standard deviation and calculate the "normal" range (within one standard deviation):
9, 6, 7, 3, 5, 7, 6, 8, 3
Round to the nearest whole number.
SD = 2, "normal" range: 4 - 8
300
Find the five-number summary for the set of data below:
18, 21, 22, 29, 19, 26, 17, 22
min: 17, max: 29, median: 21.5, Q1: 18.5, Q3: 24
300
Find the upperbound and lowerbound for the given set of data:
9, 11, 13, 15, 2, 13, 17, 15
Lowerbound = 2.5
Upperbound = 22.5
OUTLIER = ?
300
What is the formula/procedure for calculating the upper and lower bounds?
Q3 + (1.5 * IQR)
Q1 - (1.5 * IQR)
400
What is the median of:
5, 8, 9, 6, 5, 2, 4, 1
1, 2, 4, (5, 5), 6, 8, 9 so median = 5
400
Find the standard deviation and calculate the "normal" range (within one standard deviation):
4, 3, 7, 11, 4, 6, 6, 8
Round to the nearest whole number.
SD = 3, "normal" range = 3 - 9
400
What percent of data is contained between Q1 and Q3?
50%
400
Find the upper bound and lower bound for the data set below.
20, 20, 19, 26, 31, 11, 27, 22, 23, 20
Lowerbound = 11
Upperbound = 35
400
What does it mean if data is "skewed"?
Data is "skewed" when it is not evenly distributed. It is influenced, or pulled in a certain direction.
500
Find the mean, median, mode and range of:
6, 7, 14, 4, 7, 8, 7, 3
mean = 7
median = 7
mode = 7
range = 14 - 3 = 11
500
Find the standard deviation and calculate the "normal" range of acceptable answers. (within one standard deviation)
54, 78, 76, 63, 72, 52, 78, 60
Round to the nearest whole number.
SD = 10, "normal" range: 59-79
500
Looking at a box plot, how can you tell if there may be an outlier in the data?
one of the whiskers is significantly longer than the other portions of the box plot.
500
In a data set, the third quartile is 36 and the first quartile is 12. Would a value of 70 be considered an outlier?
No.
500
How does a left skewed distribution affect the mean of the data set?
It pulls the mean to the left. (Lower than the median).