Question

Type ONLY the letter that represents the correct answer next to the corresponding number in your online answer booklet. E.g. 26 B QUESTION 1 (4 Marks) Consider the following random variables: Jessie's weight, Ayanda's monthly salary, Number of items Carey purchased in a week. The data types, respectively, are: A. Continuous, Discrete, Discrete. B. Discrete, Continuous, Discrete. C. Continuous, Continuous, Discrete. D. Continuous, Continuous, Continuous. Questions 2 - 8 refer to the (incomplete) grouped frequency distribution below which depicts the test scores (%) of 40 students. | Test scores (%) | Number of students | Midpoint (m) | fm | fm² | | :--- | :--- | :--- | :--- | :--- | | 0 < 20 | 5 | 10 | | | | 20 < 40 | 9 | 30 | | | | 40 < 60 | 16 | 50 | | | | 60 < 80 | 7 | 70 | | | | 80 < 100 | 3 | 90 | | | | S | 40 | - | A | B | QUESTION 2 (4 Marks) The values of A and B, respectively, are: A. 1808 and 107 200 B. 1880 and 107 200 C. 1880 and 172 000 D. 1880 and 3 534 400 QUESTION 3 (4 Marks) The estimated mean score (%) is: A. 50 B. 45 C. 42 D. 47 QUESTION 4 (4 Marks) The median score (%) is: A. 47.5 B. 45.5 C. 43.5 D. 49.5 QUESTION 5 (4 Marks) The modal score (%) is: A. 48.75 B. 47.25

          Type ONLY the letter that represents the correct answer next to the corresponding number in your online
answer booklet. E.g. 26 B

QUESTION 1
(4 Marks)
Consider the following random variables:
Jessie's weight, Ayanda's monthly salary, Number of items Carey purchased in a week.
The data types, respectively, are:
A. Continuous, Discrete, Discrete.
B. Discrete, Continuous, Discrete.
C. Continuous, Continuous, Discrete.
D. Continuous, Continuous, Continuous.

Questions 2 - 8 refer to the (incomplete) grouped frequency distribution below which depicts the test scores (%)
of 40 students.

| Test scores (%) | Number of students | Midpoint (m) | fm | fm² |
| :--- | :--- | :--- | :--- | :--- |
| 0 < 20 | 5 | 10 | | |
| 20 < 40 | 9 | 30 | | |
| 40 < 60 | 16 | 50 | | |
| 60 < 80 | 7 | 70 | | |
| 80 < 100 | 3 | 90 | | |
| S | 40 | - | A | B |

QUESTION 2
(4 Marks)
The values of A and B, respectively, are:
A. 1808 and 107 200
B. 1880 and 107 200
C. 1880 and 172 000
D. 1880 and 3 534 400

QUESTION 3
(4 Marks)
The estimated mean score (%) is:
A. 50
B. 45
C. 42
D. 47

QUESTION 4
(4 Marks)
The median score (%) is:
A. 47.5
B. 45.5
C. 43.5
D. 49.5

QUESTION 5
(4 Marks)
The modal score (%) is:
A. 48.75
B. 47.25

Type ONLY the letter that represents the correct answer next to the corresponding number in your online
answer booklet. E.g. 26 B

QUESTION 1
(4 Marks)
Consider the following random variables:
Jessie's weight, Ayanda's monthly salary, Number of items Carey purchased in a week.
The data types, respectively, are:
A. Continuous, Discrete, Discrete.
B. Discrete, Continuous, Discrete.
C. Continuous, Continuous, Discrete.
D. Continuous, Continuous, Continuous.

Questions 2 - 8 refer to the (incomplete) grouped frequency distribution below which depicts the test scores (%)
of 40 students.

| Test scores (%) | Number of students | Midpoint (m) | fm | fm² |
| :— | :— | :— | :— | :— |
| 0 < 20 | 5 | 10 | | |
| 20 < 40 | 9 | 30 | | |
| 40 < 60 | 16 | 50 | | |
| 60 < 80 | 7 | 70 | | |
| 80 < 100 | 3 | 90 | | |
| S | 40 | - | A | B |

QUESTION 2
(4 Marks)
The values of A and B, respectively, are:
A. 1808 and 107 200
B. 1880 and 107 200
C. 1880 and 172 000
D. 1880 and 3 534 400

QUESTION 3
(4 Marks)
The estimated mean score (%) is:
A. 50
B. 45
C. 42
D. 47

QUESTION 4
(4 Marks)
The median score (%) is:
A. 47.5
B. 45.5
C. 43.5
D. 49.5

QUESTION 5
(4 Marks)
The modal score (%) is:
A. 48.75
B. 47.25

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