Research Method-quantiative Data

Question 0

What is qualitative data

Answer 0

Occurs as descriptive

Question 1

Whats quantitative data

Answer 1

Occurs as numbers

Question 2

What does bar chart show

Answer 2

Data in the form of categories being compared

Question 3

What does histograms show

Answer 3

Present continuos data like test scores

Question 4

What does frequency polygon show

Answer 4

⚫️Present continuous data
➡️used when two or more frequency distributions
➡️need to be compared

Question 5

What does scattergrams show

Answer 5

⚫️used to display correlation data

➡️showing how co-variables are related

Question 6

What does the measure of central tendency mean

Answer 6

⚫️methods of estimating mid-point scores
➡️in sets of data
➡️by summarising large amounts of data
➡️into typical scores

Question 7

What does median mean

Answer 7

⚫️the middle score

➡️in a list of rank-ordered scores

Question 8

What are the strengths of the median

Answer 8

⚫️not affected by extreme scores

⚫️the data can be put in rank order

Question 9

What is the weakness of the median

Answer 9

⚫️not as sensitive as the mean
➡️as not all scores are used

⚫️can be unrepresentative in a small set of data

Question 10

What is the mean

Answer 10

⚫️mathematical average
➡️calculated by
➡dividing the total scores
➡️by the number of scores

Question 11

What is the strength of the mean

Answer 11

⚫️makes use of all the scores
➡️in a set of data
➡️in its calculation

⚫️most accurate measure of the central tendency
➡️uses the interval level of measurement
➡️where the units of measurements
➡️are of equal size

Question 12

What is the weakness of the mean

Answer 12

⚫️mean score may not actually be one of the scores in the data

⚫️can be skewed (unrepresentative)
➡️if there are extreme scores

Question 13

What is the mode

Answer 13

The most commonly occurring score in a set of data

Question 14

What is the strength of the mode

Answer 14

⚫️less likely to be affected by extreme value

⚫️makes more sense than other measures of central tendency

Question 15

What is the weakness of the mode

Answer 15

⚫️more than one mode can occur in a set of data

⚫️does not use all scores

Question 16

What does measures of dispersion mean

Answer 16

➡️measurements of the spread of scores

➡️within a set of data

Question 17

What is the range

Answer 17

The difference between the highest and lowest scores

Question 18

What is the strength of the range

Answer 18

⚫️relatively easy and quick to calculate

⚫️takes full account of extreme values

Question 19

What is the weakness of the range

Answer 19

⚫️can be distorted by extreme values

⚫doesnt show data as clustered
➡️or spread evenly around the mean

Question 20

What does the interquartile range mean

Answer 20

The spread of the middle 50% of a set of scores

Question 21

What are the strengths of IQR

Answer 21

➡️easy to calculate

➡️not affected by extreme values

Question 22

What are the weakness of IQR

Answer 22

⚫doesn’t make use of all the scores in a set of data

⚫️becomes inaccurate if there are large intervals between individual scores

Question 23

What does standard deviation mean

Answer 23

Measures of the variability of a set of scores from the mean

Question 24

What are the strengths of standard deviation

Answer 24

⚫️has sensitivity
➡️as all scores in a set if data is used

⚫️allows for the interpretation of individual scores

Question 25

What is the weakness of standard deviation

Answer 25

⚫️relatively complicated to calculate

⚫️becomes less meaningful
➡️if data are not normally distrubuted

Question 26

What is content analysis

Answer 26

⚫️converts qualitative data into quantitative data
➡️allowing the numerical analysis
➡️of written, verbal and visual communications

➡️such as newspapers, advertisements

Question 27

What dos content analysis require

Answer 27

⚫️creation of quantifiable coding units
➡️to categorise material to be analysed
➡categorising through coding units
➡️can involve words, themes, characters or time and space