AP Bio Summer Assignment Flashcards

7272325733	Types of graphs (5)	line, scatter, bar, histogram, pie	0
7272326152	Line	changes over time (years, minutes, etc)	1
7272326153	Scatter	correlation between two variables best fit line: half above, half below perfect positive correlation = 1 perfect negative correlation = -1 no correlation = 0 closer to 0, weaker it is	2
7272326556	Bar	comparing groups different from histogram: -space in between bars -numbers DV, words IV	3
7272326557	Histogram	distribution data different from bar graph: -bars touch -IV and DV numbers	4
7272326558	Pie	parts of a whole percentage	5
7272378089	Parameter vs sample	everything vs a part of everything	6
7272359004	N meaning	sample size	7
7272362382	x(bar) meaning	average, mean	8
7272362383	M meaning	median, midpoint	9
7272365911	range meaning	difference between extremes	10
7272366869	degrees of freedom	n-1	11
7272368929	example that explains degrees of freedom	If you're given 8 numbers in an equation and are allowed to choose those 8 #'s, all numbers except the last can be anything you wish. This is because there's a specified result to the equation and the last # decides whether you can achieve that result or not.	12
7272381906	normal distribution	type of standard deviation that looks like a bell shaped curve	13
7272381526	standard deviation	a measure of variation, i.e. how spread out the numbers are the closer the data appears on a graph the smaller the st. dev. the farther apart, the larger the st. dev	14
7272393005	standard deviation formula	(image)	15
7272399930	importance of standard error	shows precision of data as well as accuracy more trials = smaller standard error	16
7272406939	St. error formula	(image)	17
7272412913	if SEM bars overlap and the mean is within it means	no difference between two groups	18
7272416447	if SEM bars overlap and the mean is NOT within it means	no similarity or difference two groups	19
7272416448	if SEM bars do NOT overlap	difference between two groups	20