assignments Flashcards _ (ANSWERS) Semester 1 2024(1).pdf

8/1/24, 8:16 AM 1/7 Assignments Jeremiah Terms in this set (45) An inference is - - - - -. a generalisation from a specific situation to the phenomenon in general, which have a high probability of being true In quantitative research, 'measurement' refers to which of the options given below? (a) A procedure for allocating numbers to aspects of observations based on a rule. (c) A process of changing an abstract construct into a visible variable. "The mental age of child number one is eight years". In this statement "mental age" is a(n) - - - - -, whereas "eight years" is a - - - - -. variable; specific value of that variable A measurement that summarizes an aspect of a population is called a ----------- while a measurement that describes the same aspect of a sample is called ------ - -. parameter; statistic A ---------- is a speculative statement about the relationship among ----------- , based on observations or expectations. hypothesis; constructs Rose is interested in studying creativity among fine arts students. She randomly selects 100 students who are attending a school for fine arts and tests each of them on a creativity test. In this example, the entire collection of fine arts students which Rose is interested in is referred to as the ----------- , while the 100 cases which she requires to perform the creativity test are the ------- - -. population; sample 8/1/24, 8:16 AM 2/7 A frequency distribution of the ages in months of a class of Grade 1 children indicates for each age in months what the corresponding ------------ is. number of children of that age If a pupil will be chosen to go on a field trip from a class of 13 girls and 17 boys, what is the probability that Noni (one of the 13 girls) will be chosen, given that a girl will be selected? 0.077 Which statement best represents an application of the law of large numbers? If I flip a coin 1000 times it will fall heads up------------ 500 times. approximately Suppose that over the years 10 000 students wrote the examinations in PYC3704 and that 6000 of them passed, of which 300 obtained exactly 50%. This means that for randomly selected students the probability of obtaining exactly 50% is - - - - - while the probability of obtaining 50% or more is ------ - -. 0.03; 0.60 The scale along the horizontal axis of the standard normal distribution indicates - - - - -. the number of standard deviations below and above the mean A researcher wants to check that a pair of dice are fair (i.e. evenly balanced). What would the probability be of rolling two sixes with two throws of a pair of fair dice? 0.028 What is the principal advantage of z scores? They enable one to - - - - -. compare a person's scores on tests with different means and standard deviations There are 16 boys and 24 girls in a sample of grade 11 learners. It is found that 6 of the girls and 2 of the boys have no brothers or sisters. If one child is drawn from this sample at random, what is the probability that it will be an only child? 0.200 A bowl contains 6 red, 5 green, 8 blue and 3 yellow marbles. If a single marble is chosen at random from the jar, what is the probability that the marble would be EITHER green OR yellow? 0.363