**Stats101 Midterm sample test**

**TERM I 2009-10 MIDTERM TEST **

**STAT101 Introductory Statistics **

__INSTRUCTIONS TO STUDENTS __

1. The time allowed for this test paper is **1.5 hours**.

2. Write your IC number and name on the front page of the test paper.

3. This is a **closed book **test.

4. This test paper contains a total of **twenty (20) **questions worth 30 points (questions are not of equal weight).

5. For multiple choice questions (MCQ's), you must circle your letter choice in __pen __on the test paper *and *put your letter choice in the space provided. There is no penalty for guessing

6. For non-MCQ's, answer all questions in __pen__, not pencil. Cross out workings that you do not wish to be considered. Marks will be awarded for working out the solutions.

7. You may leave early if you wish.

8. Please check that the normal table is attached.

**IC:_________________________ **

**Name:________________________ **

_E___1. Determine the best selection of terms concerning with the collection of data, to

complete the statement: “The entire group of objects or people about which

information is wanted is called the __________. Individual members are called

____________. The _________ is the part that is actually examined in order to

gather information.”

A. population, explanatory variables, subgroup

B. whole, items of interest, stratum

C. response group, respondents, non-response group

D. sample, units, target population

**E. population, units, sample**

_A___2. In an experiment to determine if antibiotics increase the final dressed weight of

pig, the following were measured on each animal in the study: sex, initial weight,

weight gain, grade of meat, where grade is recorded as (A, B, or C). The scale of

measurement of these variable are:

** A. Nominal, ratio, ratio, ordinal**

B. Nominal, ratio, ratio, nominal

C. Nominal, ratio, interval, nominal

D. Ordinal, ratio, ratio, ordinal

E. Ordinal, ratio, ratio, nominal

__C__3. The following is a histogram showing the actual frequency of the closing

prices on the Singapore Stock Exchange of a particular stock.

Based on the above frequency histogram for Singapore Stock Exchange,

the class that contains the 80th percentile is:

A. 10 - <20

B. 20 - <30

C. 30 - <40

D. 40 - <50

E. 50 - <60

**Category:**Business, General Business

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