Suppose the total monetary value of sales on N = 6000 invoices is R550 000 and that a number of invoices must be selected according to a probability proportional to size (PPS) selection process. Suppose we determine that n = 30 invoices are to be selected.

/

Gestel die totale monetêre waarde van verkope van N = 6000 fakture is R550 000 en dat ʼn aantal fakture volgens ʼn waarskynlikheid ewekansig aan grootte (WEG) seleksie-proses getrek moet word. Gestel ons bepaal dat n = 30 fakture geselekteer moet word.

Suppose the first five 6-digit numbers are 000034, 003450, 010200, 015234, and 025010. Given the information above, complete the table and indicate which invoices will be included in the sample.

/

Gestel die eerste vyf 6-syfergetalle is 000034, 003450, 010200, 015234, en 025010. Gegewe die bogenoemde inligting, voltooi die tabel en dui aan watter fakture in die steekproef ingesluit sal word.

If the PPS selection method is used to choose invoices from this population, calculate the probability that Invoice 4 is the first invoice selected. Assume that the random numbers are not ordered from smallest to largest.

/

Indien die WEG seleksie-proses gebruik word om fakture uit hierdie populasie te selekteer, bereken die waarskynlikheid dat Faktuur 4 eerste geselekteer word. Neem aan dat die ewekansige getalle nie van klein na groot gerangskik word nie.

Consider the following table of the number of confirmed Coronavirus cases in South Africa as well as the proportion of the population that each province makes up.

/ 

Beskou die volgende tabel van die aantal bevestigde gevalle van Coronavirus in Suid-Afrika sowel as die proporsie van die populasie wat elke provinsie opmaak. 

The angle of the Eastern Cape sector in the construction of a pie chart for the number of Coronavirus cases is

/ 

Die hoek van die "Eastern Cape" sektor in die konstruksie van 'n sektordiagram vir die aantal Coronavirus gevalle is

If the cases were distributed according to the province population proportions, how many cases would the Western Cape have (rounded to the nearest integer)?

/

Indien die aantal gevalle volgens die provinsie bevolkingsproporsies verdeel was, hoeveel gevalle sou die "Western Cape" gehad het (tot die naaste heelgetal afgerond)? 

Consider the stem-and-leaf display below:

/

Beskou die stingel-en-blaar voorstelling hieronder:

Stem / Stingel                  Leaf / Blaar

1                                        0 0 2 3  

2                                        1 1 2 4 7 8

3                                        4 4 5 8 8 9 9 

5                                        0 2 3 5 5 6

6                                        5 6 6 9 

7                                        1 3 4 

8                                        0 1 3 3 5 6

9                                        0 0 3 5 7 8 8 9

10                                      3 5 5 7 7 

Scale: / Skaal:   5        0 = 50

The values that appear least are

/

Die waardes wat die minste voorkom is

In an investigation of three banks in South Africa, ten analysts were asked to indicate the risk of one of the banks to become insolvent as ‘low’, ‘medium’ or ‘high’. The following excerpt from the data is given to you. From this we can, for example, see the evaluation of Bank 1 was allocated to analysts 1, 2, 8, and 10 and that analyst 8 deemed the risk to be low, while the other three deemed it to be high.

/

In ’n ondersoek van drie banke in Suid-Afrika is tien analiste gevra om een van die banke se risiko om insolvent te raak, as ‘laag’, ‘medium’ of ‘hoog’ aan te dui. Die volgende uittreksel uit die data word aan u gegee. Hieruit kan ons byvoorbeeld sien dat die evaluering van Bank 1 aan analiste 1, 2, 8 en 10 toegeken is, en dat analis 8 die risiko as laag beskou het, terwyl die ander drie die risiko as hoog beskou het. 

18.   The variable Risk is an example of / Die veranderlike Risiko is ’n voorbeeld van 

Which one of the following is more likely a parameter than a statistic? 

/

Watter een van die volgende is eerder ‘n parameter as ‘n steekproefstatistiek?

The last page number in a book is an example of a

/

Die laaste bladsynommer in ‘n boek is ‘n voorbeeld van ‘n 

The severity of side effects experienced by patients while being treated with a particular medicine is under study. The severity is measured on the scale: none, mild, moderate, severe, very severe. The variable of interest is

/

Die felheid van die newe-effekte deur pasiënte ervaar terwyl onder behandeling met ‘n spesifieke medikasie word ondersoek. Die felheid word gemeet op die skaal: geen, lig, matig, hewig, uiters hewig. Die veranderlike van belang is

Which one of the following statements is incorrect?

/

Watter een van die volgende stellings is foutief?

A summary measure describing a characteristic of the population is called a

/

‘n Opsommende maatstaf wat ‘n eienskap van die populasie beskryf is ‘n

A parameter

/

'n Parameter