distrubution

Question 1

what are the types of distrubution

Answer 1

• normal distribution
• positively skewed distribution
• negatively skewed distribution

Question 2

Normal distribution

Answer 2

• median and mode centred around the mean
• mean, median and mode (measures of central tendency) are similar
• bell shaped curve - symmetrical

Question 3

positive skew

Answer 3

• curve on the left, tail (the flat part of line) on the right
• mode is lower than mean (the value of the mode is smaller than the mean, e.g. mode is 5 and the mean is 8)
• occurs when the test is difficult/hard

Question 4

negative skew

Answer 4

• curve on the right, tail (the flat part of line) on the left
• mode is higher than the mean (the value of the mode is larger than the mean, e.g. mode is 11 and the mean is 8)