methodology

Question 1

experimental hypothesis

Answer 1

there will be a difference

Question 2

null hypothesis

Answer 2

there will be no difference

Question 3

the 2 types of experimental hypothesis

Answer 3

one tailed

two tailed

Question 4

aims

Answer 4

describe what the research is for

Question 5

6 rules for writing a hypothesis

Answer 5

1. must be written as a prediction of a future event
   2.must use psychological terminology
   3.experimental hypothesis must use the word significantly
   4.the null hypothesis always finishes with ‘any difference will be due to chance factors’
2. must be concise and clear
   6.always make sure both IV and DV are operationalised

Question 6

what word must experimental hypothesis use?

Answer 6

significantly

Question 7

what must the null hypothesis finish with?

Answer 7

any difference will be due to chance factors

Question 8

when is a bar chart most likely to be used?

Answer 8

to compare different catagorical data

Question 9

when is a histogram most likely to be used?

Answer 9

used to summarise continuous data in a catagorical form

Question 10

when is a scatter graph most likely to be used?

Answer 10

to show the relationship between different variables

Question 11

when is a pie chart most likely to be used?

Answer 11

used when drawing a graph to display percentages

Question 12

when is a line graph most likely to be used?

Answer 12

to display continuous data

used for when there is multiple sets of data being plotted on the same graph

Question 13

how do you draw a frequency table?

Answer 13

1. first column shows what is being arranged in ascending order. if there are too many data values or the range is high, a particular interval of data is chosen
2. second column is where the tally is marked based on corresponding data

3.the third column is the frequency

Question 14

median

Answer 14

the value that has as many scores above as below

Question 15

mode

Answer 15

the most frequently occurring value

Question 16

why is the mean the preferred average?

Answer 16

it makes use of all the scores and the total

it can be used in other, more advanced mathematical analyses such as calculating the standard deviation

Question 17

central tendency

Answer 17

the tendency for the values of a random variable to cluster round its mean, mode, or median.

Question 18

dispersion

Answer 18

tell us whether our scores are clustered closely around the mean or widely scattered

Question 19

what are the most common measures of dispersion

Answer 19

the range
the standard deviation
variance (standard deviation squared)

Question 20

what is standard deviation?

Answer 20

indicates the average of the distances of all of the scores around the mean

Question 21

what is the formula for standard deviation?

Answer 21

look it up cause i can’t put images on here

Question 22

how do you work out SD?

Answer 22

1. work out the mean
2. then for each number subtract the mean and square the result
   3.then work out the mean for those squared differences
   4.take the square root of that and we are done

Question 23

variance

Answer 23

standard deviation squared

therefore it gives a magnified view of the spread of scores

allowing the researcher a clearer picture of the data

Question 24

what properties does a distribution curve have?

Answer 24

mean median and mode all occur at the same point and have the same value (at the highest point, in the middle)

it is bell shaped and has the same shape either side of the mean, the pattern of scores is exactly the same above the mean as it is below

Question 25

not finished this deck so continue