Extreme values that can cause the mean to be unbalanced.
Outliers
100
What percentile is the upper quartile?
75th percentile
100
What is the mode of: 3, 5, 7, 12, 13, 14, 20, 23, 23, 23, 23, 29, 39, 40, 56
23
100
What type of graph uses bars to compare frequencies of possible data values.
Bar graphs
100
What are the modes of this set of numbers?
1, 3, 3, 3, 4, 4, 6, 6, 6, 9
3 and 6
200
These types of statistics are Not affected by outliers.
Resistant Statistics
200
This method of finding the middle calculates the mean of the highest and lowest numbers.
Mid-point
200
What is the mean in this set of numbers? 19, 8, 29, 35, 19, 28, 15
22
200
Which number is the outlier in this set of numbers?
3, 7, 5, 13, 20, 23, 39, 23, 40, 23, 14, 12, 56, 23, 29
There isn't one
200
Twelve students were given a math test, and the times (in minutes) to complete it are listed below. Find the range of these times.
10, 9, 12, 11, 8, 15, 9, 7, 8, 6, 12, 10
9
300
a statistic that identifies the percentage of the data that is less than the given value.
Percentile
300
This method of finding middle is the sum of a set of numbers divided by the number of observations.
Mean
300
Which two numbers would you remove to get the "Trimmed Mean" of this set? 3, 5, 7, 12, 13, 14, 20, 23, 23, 23, 23, 29, 39, 40, 56
3 and 56
300
These types of graphs are useful for showing gaps, clusters, and outliers in distributions.
Stem and Leaf
300
What is the median age of the 7 children whose ages are listed below?
11, 10, 13, 11, 12, 16, 14
12
400
What is the most commonly used percentile?
50% or median
400
Found by taking the highest number and subtracting the lowest number.
Range
400
What do you call it when you take 5% of the numbers from the top and the bottom of a set of numbers so that you can get rid of a couple of outliers on either side of the set?
Trimmed Mean
400
The very middle of a set of numbers.
Median
400
The mean of a set of numbers is 108. The sum of the numbers is 2,052. How many numbers are in the set?
19
500
What percentile is the lower quartile?
25th percentile
500
The most frequent number found in a set of statical data.
Mode
500
If I flip 7 coins at one time, 500 different times, 6 heads and 1 tail appeared 200 times. The 200 is the ________ of the set.
Frequency
500
What are the three methods of finding the middle of a set of statistics?
Mean, Median, and Mid-Range
500
Heather's test scores are 81, 93, 74 and 95. What score must she get on the fifth test in order to get a mean of 85 on all five tests?