data analysis

Question 1

what are the levels are measurement ?

Answer 1

1. nominal data
2. ordinal data
3. interval data
4. ratio data

Question 2

nominal data ?

Answer 2

categorising data

Question 3

ordinal data?

Answer 3

ranking data in order

Question 4

interval data?

Answer 4

no true zero

Question 5

ratio data ?

Answer 5

absolute zero

Question 6

measures of central tendency ?

Answer 6

mean
median
mode

Question 7

strength and weakness of mean ?

Answer 7

strength = most sensitive measure takes into account all the data items
weakness = can be easily distorted by extreme values therefore giving misinterpretation of data

Question 8

strength and weakness of median ?

Answer 8

strength = not affected by extreme scores therefore easier to calculate
weakness = not as sensitive as the mean because not all data has been reflected

Question 9

strength and weakness of mode?

Answer 9

strength = not affected by extreme scores and therefore easier to calculate
weakness = not useful when there’s several modes

Question 10

measures of dispersion ?

Answer 10

• range
• standard deviation