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Midterm Review (Chapter 1 & 2)

Total questions: 55

Worksheet time: 28mins

Name
Class
Date
1.

Statistics is the science of conducting studies from data!

a)

True

b)

Flase

2.

Steps of conducting studies in Statistics:

1. Collecting data

2. Drawing a conclusion

3. Organizing data

4. Summarizing data

5. Analyzing

a)

Flase

b)

True

3.

....... is variables whose values are determined by chance

a)

Random vairbles

b)

Bias variable

c)

Data

4.

A data is a value that variable can assume

a)

True

b)

False

5.

Data set is a collection of data values.

a)

Correct

b)

Incorrect

6.

Which one is a variable?

a)

Age

b)

7 years old

c)

Black

d)

1.73m

7.

1cm, 2cm, 3cm are data value.

Which variable assume these value?

a)

Length

b)

Age

c)

Gender

8.

These are variable EXCEPT......

a)

Car color

b)

Ice cream flavor

c)

University major

d)

5kg

9.

The two branches of Statistics:

a)

Inferential & Descriptive

b)

Quantitative & Qualititative

c)

Bias & unbias

10.

Sample is larger than population.

a)

False

b)

True

11.

A sample is a group of subjects selected from a population.

a)

False

b)

True

12.

The average cost of lunch in Phnom Penh is $2.5.

a)

Descriptive

b)

Inferential

13.

According to the survey of 1000 factory workers, it can be concluded that Cambodian factory workers prefer to eat out.

a)

Descriptive

b)

Inferential

14.

Making predictions is part os inferential statistics.

a)

True

b)

False

15.

The World Bank predicted that the Cambodian economic growth will be around 4% next year.

a)

Descriptive

b)

Inferential

16.

The minimum wage in the garment industry in Cambodia in 2020 is about $190.

a)

Descriptive Statistics

b)

Inferential Statistics

c)

None of the above

17.

There are four types of data.

a)

True

b)

Flase

18.

Which of the TWO are types of data?

a)

Qualititative

b)

Cluster

c)

Stratified

d)

Quantitative

19.

Employment Status

a)

qualititative

b)

discrete quantitative

c)

continuous quantitative

20.

Brands of sneakers

a)

Continous

b)

qualititative

21.

Number of student enrolling in CamEd

a)

qualtitative data

b)

continuous

c)

discrete data

22.

Height of football players

a)

Continous

b)

discrete

23.

There are ............ levels of measurement in statistics.

a)

Five

b)

three

c)

Four

d)

one

24.

Blood types

a)

Ordinal

b)

Nominal

c)

Ratio

d)

Interval

25.

Level of satisfication of using a public bus in Phnom Penh (satisfied, neutral, not satisfied...)

a)

ordinal

b)

interval

c)

ratio

d)

nominal

26.

Number of foreign visistors to ngkor Wat

a)

Interval

b)

Ratio level

c)

Nominal

d)

ordinal

27.

IQ test scores

a)

Nominal

b)

Ordinal

c)

Interval

28.

Temperature in degree celcius

a)

Interval

b)

Ordinal

29.

There are four basic method of sampling, namely:

a)

Random

Systematic

Cluster

Stratified

b)

Qualitative

quantitative

dicrete

continuous

c)

Descriptive

Inferential

Viriable

Data

30.

To determine how often students use the library, a researcher interviews 10 students from freshman class, 10 students from sophomore class, 10 students from junior class, and 10 students from senior class. Which sampling method, the researcher used?

a)

Random sampling

b)

Systematic sampling

c)

Stratified sampling

31.

You visit a village and get a list of the households from the village chief. The total number of households in the village is 200. Then, you number all the household, place the number in a box and draw 50 households for interviewing. This is an example of a...

a)

stratified sampling

b)

random sampling

c)

cluster sampling

d)

systematic sampling

32.
Which one is NOT the reason to construct a frequency distribution ?
a)

To enable reader to make comparisons among different classes

b)

To organize data in a meaningful way

c)

To create a graphic design

d)

To enable reseacher to draw charts and graphs for presentation of data

33.
What are the frequency we have learned ?
a)
Group frequency distribution
b)
Ungrouped frequency distribution
c)
Categories frequency distribution
d)
All the three
34.
When do we use the categorical frequency distribution ?
a)
When the data is qualititative data
b)
When the data is ratio data
c)
when the data is raw data
d)
when the data is quantitative data
35.

What is the Google Sheet formula used to clculate frequency of categorical frequency distribution?

a)

COUNTIF(...)

b)

COUNTIFS(...)

c)

SUM(...)

d)

IF(...)

36.
When do we use the ungrouped frequency distribution ?
a)
when the data is qualitative data
b)
when the data is quantitative data and the range is large
c)
when the quantitative data is continuous
d)
when the data is quantitative data and the range is small
37.
what is the Organization of data called?
a)
None of these choices
b)
Ungroup frequency distribution
c)
grouped frequency distribution
d)
Categories frequency distribution
38.
How to compute class width ?
a)
(highest value +lowest value)/number of classes
b)
upper limit - lower limit)/2
c)
highest value - lowest value)/ number of classes
d)
(lowest value - highest value)/2
39.
After computing the class width, the answer is 5.3, what should be the class width ?
a)
5
b)
6
c)
5.3
d)
5.5
40.
The greatest value in a data set is 187, while the lowest value is 66. what should the class width be if data is grouped into a 7 class frequency distribution ?
a)
18
b)
20
c)
5
d)
121
41.
How to compute the class midpoint ?
a)
(upper boundary - lower boundary)/2
b)
(upper boundary + lower boundary)/2
c)
(upper limit - lower limit)/2
d)
number of classes/2
42.
What is the suggested number of classes ?
a)
It should be every single data
b)
It should be from 1 to 100
c)
It should be from 1 to 5
d)
It should be from 5 to 20
43.
In a frequency distribution, the frequency of a particular class divided by the total of frequencies is called ______ .
a)
None of these choice
b)
the class midpoint
c)
the cumulative frequency
d)
the relative frequency
44.
What should be the lower limit of the first class of the grouped frequency distribution ?
a)
the lowest value or any convinient value smaller than the lowest value
b)
The highest value
c)
any number
d)
the class midpoint
45.
If the class limits is 100 - 105, what should be the class boundaries?
a)
99.5 - 104.5
b)
99.5 - 105.5
c)
100.5 - 105.5
d)
100 - 104.5
46.
For a cumulative frequency polygon (ogive).
a)
the class broundaries are plotted on the horizontal axis and the class frequencies are plotted on the vertical axis
b)
The class frequencies are plotted on the horizontal axis and the class boundaries are plotted on the vertical axis
c)
The class midpoint are plotted on the horizontal and axis and the cumulative frequencies are plotted on the vertical axis
d)
the class boundaries are plotted on the horizontal axis and the cumulative frequencies are plotted on the vertical axis
47.
For a histogram
a)
The class boundaries are plotted on the horizontal axis and the class frequencies are plotted on the vertial axis.
b)
the class frequencies are plotted on the horizontal axis and the boundaries are plotted on the vertical axis
c)
the class midpoint are plotted on the horizontal axis and the class frequencies are plotted on the vertical axis
d)
the class midpoint are plotted on the horizontal axis and the class cumulative frequencies are plotted on the vertical axis
48.

What is the midrange (midpoint) of the data ?

a)

none of these choices

b)

48

c)

46

d)

43

49.

Stem of "stem and leafe plot" represent the:

a)

first digit (leading digit)

b)

trailing digit

c)

last digit

50.
Which of the following is the most appropriate for representing nominal-level data ?
a)
Pie chart
b)
histogram
c)
ogive
d)
Frequency polygon
51.

Pie chart does show trend of the distributions!

a)

True

b)

False

52.

What is the lowest value?

a)

10

b)

16

c)

48

d)

37

53.

What is the name of this graph?

a)

Bar chart

b)

Pareto Chart

c)

Pie

d)

Line graphs

54.

Pareto chart consists of:

a)

Bar graphs for frequency of eac class

b)

Line graph for cumulative percentage

c)

Histgrom for class midpoints

d)

Pie chart for the proportion

55.

Time series graph represents data that occure over a specific period of time.

a)

True

b)

False

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