Week 5 Revision

Question 1

Which of the following is a categorical variable?

Accepted Answer

gender

Question 2

To represent no. of mistakes candidates made in job interviews, which chart type can be used?

Accepted Answer

Histogram

Question 3

Calculate the Conditional Probability when drawing 2 Kings from a Deck of cards

Accepted Answer

1/221 Or 0.0045

Question 4

Which of the following statistics is NOT a measure of central tendency?

Accepted Answer

All above answers

Question 5

What type of Correlation is shown in the following chart?

Accepted Answer

No Correlation

Question 6

What is frequency?

Accepted Answer

Number of times an outcome occurs

Question 7

Independents Events can be calculated as:

Accepted Answer

P (a AND b) = P(a) x P(b)

Question 8

Mutually exclusive events are those which can occur at the same time:

Accepted Answer

False

Question 9

what is the propability of getting a spade from a cheek of cards.

Accepted Answer

A.1/4

Question 10

numerical data is?

Accepted Answer

quantitative data

Question 11

The probability of a certain event is:

Accepted Answer

1

Question 12

The set of all outcomes S that belong to both A and B are known as:

Accepted Answer

Intersection of Events

Question 13

The average exam grade for each student is an example of a numerical variable?

Accepted Answer

True

Question 14

In regression, how the slope ‘b’ (in y = a + bx) is calculated?

Accepted Answer

b = r 𝑺𝒚/𝑺𝒙 , where S refers to Standard Deviation

Question 15

A summary table in which numerical data are tallied into class intervals or categories.

Accepted Answer

Frequency Table

Question 16

Which measure of central tendency applies to categorical variables?

Accepted Answer

mode

Question 17

What kind of correlation is this?

Accepted Answer

Negative

Question 18

What Correlation is this?

Accepted Answer

Positive

Question 19

A continuous variable is...

Accepted Answer

Measurable

Question 20

Which of the following is a continuous quantitative variable?

Accepted Answer

The amount of milk produced by a cow in one 24-hour period.

Question 21

If P(A) is between 0 and 1, then the event

Accepted Answer

Gives a relative frequency

Questions 21