Chapter Two Flashcards
A _____ refers to the people in your study whereas a ____ refers to a distinct group of people
Sample; population
Why do we use inferential statistics
Inferential statistics are used to help us to generalise from the sample to the whole population
Find the mean, mode, median and false answer from this data set
12,4,5,18,11,10,8,6,5,14,11,5,3,11,5,12
Mean: 8.75
Mode: 5
Median: 9
False: 11
Rank the scores from the previous card
Score 8 = Rank 8
Score 5 = Rank 4.5
Score 11 = Rank 11
Score 12 = Rank 13.5
Which measure of central tendency is more misrepresentative of the data set
Mode
Central limit theorem refers to:
The tendency of the mean of sample means to equal the population mean.
What is the degree to which sample statistics differ from the equivalent population parameter known as:
Sampling error
Remember below answer
The larger the sample size, the closer the sample mean will be to the population mean
Which of the following graphs would you us to explore the distribution of scores on an inventory measuring physical fitness
All of the above
Which of the following plots is the most useful to detecting outlying scores
Box and whisker plot
You are creating a box and whisker plot to describe this data. What would be the upper hinge?
11, 19, 19, 20, 21, 24, 25, 25, 36
25
Using the previous data set, match the data with function in the box plot
Lower hinge: 19
Extreme score: 36
Inner fence: 34
Median: 21
You are doing a study to explore the relationship between attitudes towards exercise and physical fitness levels. Which plot might you use to explore this relationship
Scattergram
For data to be normally distributed, which of the following characteristics should it have?
To be defined as normal, a distribution should be symmetrical about the mean, it should meet the x acid at infirmity and it should be bell shaped
What is the range?
14, 23, 9, 12, 21, 18, 8
15
