a) Identify and explain 4 ways statistics can be used in everyday life.

b) Explain advantages and disadvantages of the following sampling techniques:

i) Random sampling

ii) Stratified sampling

iii) Cluster sampling

c) Classify each variable below as either discrete or continuous:

i) Number of loaves of bread baked each day at a local bakery

ii) Water temperature of the saunas at a given health spa

iii) Income of single parents who attend a community college

iv) Lifetime of batteries in a tape recorder

v) Weights of newborn infants at a certain hospital

vi) Capacity (in gallons) of water in swimming pools

d) Classify each variable as qualitative or quantitative

i) Colours of automobiles in the faculty parking lot

ii) Classification of children in a day care centre

iii) Number of on-road vehicles sold in Malaysia

iv) Capacity (in gallons) of water in selected dams

e) The Federal Highway Administration reported the number of deficient bridges in each

state.

Compute the following :

i) Range

ii) Variance

iii) Standard deviation

15458 1055 5008 3598 8984 1337 4132 10617 17361 6081 12470 17444