STT205 Solutions

STT205 Tma Solutions

1. \(\bar{X}=A+\frac{\sum (_{Xi – A})}{n}\) is the formula for calculating the __________

—>> Assumed mean

Arithmetic mean

Deviation mean

Coding mean

2. _______ is used by a person or people other than the person or people by whom or for whom the data was collected.

Primary Data

—>> Secondary Data

Direct observation

Mail questionnaire

3. Government uses ________to assess the trends in the economy so that it can plan future policies

Statistic

Questionnaire

—>> Statistics

Variable

4. _______ are data collected by or on behalf of the person or people who are going to make use of the data.

Secondary Data

—>> Primary Data

Direct observation

Mail questionnaire

5. ____ is the variable that can only assume whole numbers.

—>> Discrete Variable

Continuous variable

Double variable

Single variable

6. Accident fatalities on a particular road over a period of time collected from the Police or Road safety corps is an example of _______

—>> Secondary Data

Primary Data

Direct observation

Mail questionnaire

7. A ________ is a table showing the values of the data and the number of occurrence of each of the values.

Binomial distribution

Poisson distribution

Normal distribution

—>> Frequency Distribution

8. _______ a scientific approach to presentation of numerical information in such a way that one will have a maximum understanding of the reality represented by such information.

Statistic

Questionnaire

—>> Statistics

Variable

9. ______ may be person, place, and thing on which we make observations.

—>> Entity

Statistics

Variable

Population

10. Given the mean of the upper and the lower class boundaries, that is, 10.5 and 20.5 respectively. Obtain the class mark? _______

64.5

—>> 15.5

24.5

20.5

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