Terms
The complete Set of Individuals
Population
Mean can be defined as
The average of all the numbers in a data set
n-1, sample size minus one, the bottom part of the equation
Median is defined as
The middle number in the set
Probability can be expressed as
any number between 0 and 1
Characteristic(s) that are used to define a sample
Statistic
Mean can be found by
adding all the values in the data set and dividing by the amount of values in that set
What is the equation for standard deviation
square root of ((the summation of (X-xbar)squared) divided by (n-1))
What is the first step to finding the median
Organizing the numbers from smallest to largest
A probability of zero means
the event never happens
Data that can't be ranked in a meaningful order
Nominal
Two types of means are
Population and sample
first step in calculating standard deviation
finding the mean of the data set
How do you find the median if there is an even number of values
Add the middle two numbers and divide by two
A probability of 1 means
the event always happens
Data that is numerical
Quantitative
Along with median and mode, mean is used to describe measures of ________
central tendency, which are measures of location that indicate where on a number line the data is found
Calculate: 15, 25, 30, 5, 40
mean=23, sum of all= 730, variance=182.5, SD=13.5
Find the median: 3,9,4,8,10,6,2,4,5
5
the total probability of all possible event equals
1
Statistics Applied to biology or medicine
Biostatistics
Mean is an example of what kind of statistics
Descriptive, the other type of statistics is inferential
Calculate: 3, 9, 12, 16, 10
mean=10, sum of all=90, variance=22.5, SD=4.7
Find the median: 54,42,61,38,75,57,57,76,63
57
A disjoint event means
They can not occur at the same time, also know as mutually exclusive