statistics year 1

Question 1

population is the …

Answer 1

complete set of itmes of interest

Question 2

convenience sampling

Question 3

systematic sampling …

Answer 3

when sampling units are chosen at regular intervals

Question 4

census..

Answer 4

when every item in the population is measured

Question 5

what are the disadvantage of using census

Answer 5

time conuming
expensive
may destroy items

Question 6

sampling frame

Answer 6

a way of identifying a sampling unit (ID number)

Question 7

what makes up a positive skew

Answer 7

when the median < mean

Question 8

what happens when the result is less than the level of signiicance

Answer 8

reject (H 0)

Question 9

what is the critical region

Answer 9

where (h 0 ) is rejected

Question 10

when is binomial used

Answer 10

when events are independent

Question 11

what is speed in terms of velocity

Answer 11

speed is the magnitude of velocity

Question 12

how does the string not being loght affect answers

Answer 12

tensions on both particles will differ

Question 13

what are the limitations to models with balls(2)

Answer 13

• air resistance
• the ball will have dimensions