Statistics
Which is better to use with outliers: mean or median?
Median
Arithmetic or geometric: 2, 5, 8, 11, ...
Arithmetic
Solve:
x+4=10
6
What is a matrix?
Name the type of sequence: 2, 4, 8, 16, ...
Geometric
What does skewed left mean?
Tail on the left.
Find the next term: 3, 6, 12, ?
24
Solve:
2x=14
7
Are there any requirements to add/subtract matrices?
Must have the same dimensions.
Find the mean: 2, 4, 6, 8
5
How is the median represented in a box plot?
It is the line inside the box.
What is the difference between arithmetic and geometric?
Arithmetic: add to the previous term to find the next term
Geometric: multiply to the previous term to find the next term
Solve:
sqrt(x-4)=9
85
How do you multiply a matrix by a scalar?
Multiply each element in the matrix by the scalar.
True or False: a biased sample is a fair sample
False