Raw Data Flashcards
What does this symbol mean
Less than
What does this symbol mean <
Much less than
What does this symbol mean _
Less than or equal to
What does this symbol mean >
More than
What does this symbol mean»_space;
Much greater than
What does this symbol mean _>
Greater than or equal to
What does this symbol mean /=
Not equal to
What does this symbol mean ~
Approximately
Define primary data
When you collect data first hand
Define secondary data
When you use someone else’s data
Define quantitive data
Numbers and data
Define qualitative data
The text that tells you the context behind the data
Level of data: define nominal data
When you collect data in categories
e.g. How many students got A’s B’s and C’s in a test
Level of data: define ordinal data
When data is put into order or using a rating scale
e.g. 1st, 2nd 3rd
Level of data: define interval data
When you collect numbers for scores that cannot have a true zero
e.g. Percentage score on a psychology test
Level of data: define ratio
Same as interval but has a true zero
e.g. Temperature in degrees Celsius
Measures of central tendency: Define measures of central tendency
Tells you the average, or where the middle of the data set is
Level of data: define the mean
Mathematic average- all scores are added up and divided by n
Level of data: define the median
Middle number- put values in order smallest–> largest. Find middle (or go in between the two middle points)
Level of data: define the mode
Most common number in a data set
Measures of dispersion: define Measures of dispersion
Statistics that tell you how far apart your data is spread
Measures of dispersion: define the range
Difference between the highest and lowest score + 1
Measures of dispersion: define the standard deviation
Tell us how close each data point is to the mean
Measures of dispersion: define the varience
The square of the standard deviation
