L3.2 - Research Methods Part 2

How does a histogram differ from a bar graph

• Bars is bar graph are split apart (measures categorical variables), histogram the bars are together (measures continuous variables)

• Bars is bar graph are split apart (measures categorical variables), histogram the bars are together (measures continuous variables)

• Bars in bar graph are together (measures continuous variables), histogram the bars are apart (measures categorical variables)

• Bars in bar graphs are together (measures categorical variables), histogram the bars are apart (measures continuous variables)

Define population 

• population refers to the collection of organisms belonging to different species living in a specific habitat

• Population denotes the total number of individuals of a single species within a particular geographical area

• Entire pool of people that you want to make conclusions about 

• Population represents the variety of ecosystems present within a defined region

Defintion for Sample 

• A sample of population is the entire population of a given area

• A small fraction of the population that you collect data from 

• A sample of population refers to a subgroup of individuals within a species that are genetically identical

• A sample of population is a collection of individuals that includes only the young members of a species

define sample size

• Sampling size refers to the total number of species present in a particular ecosystem

• Sampling size is the geographical area covered during the sampling process

• Sampling size represents the amount of time spent on data collection during a study

• How many data points (e.g., people, observations) are in your sample 

According to central limit theorem as the size of sample increases what happens...

• The sample size will become further away from the mean

• The sample mean will approach the population mean

According to the principle of falsification how do we support our scientific claims?

• by refuting the null

• by accepting the null

• by having a strong correlation

• by having a small correlation

the correlation coefficient is between what?

• -1 and 1

• -2 and 2

• 0 and 1

• -1 and 2

interpret this correlation and tell me the direction

• positive

• negative

• no correlation

interpret this correlation and tell me the direction

• no correlation

• negative

• positive

Interpret this correlation and tell me the direction

• no correlation

• positive

• negative