5: OCR Research methods - analysing

What is qualitative data?

• Data collected first-hand

• Data collected by others

• Non-numerical data

• Numerical data

Which measure of central tendency involves putting values in numerical order and finding the middle value?

• mean

• median

• mode

• range

Which measure of central tendency involves adding all the values up and dividing by the number of values there are?

• mean

• median

• mode

• range

Which figure is a ratio?

• 15.50

• 15/50

• 15%

• 15:50

Answer explanation

Although usually we would simplify this down to 3:10 (divide each by 5).

Which of the graphs shows normally distributed data?

• top

• middle

• bottom

Which graph can be used to show continuous data?

• bar chart

• histogram

• pie chart

• scattergraph

Answer explanation

Used when the data has to go in numerical order. The bars are joined up.

Which type of reliability means something is measured consistently - e.g. questions on a test are the same level of difficulty?

• internal

• inter-rater

• external

Which type of reliability means you get consistent results across time or on different occasions?

• internal

• inter-rater

• external

Lacking which type of validity means you are over-simplifying and only measuring a narrow part of the whole?

• construct

• ecological

• population

What is quantitative data?

• Data collected first-hand

• Data collected by others

• Non-numerical data

• Numerical data