Which of the following sentences does NOT correctly describe a parameter in statistics?

The mean test score of a group of 50 students from 200 standard 1 student.

Which of the following does NOT correctly describe the difference between interval and ratio data?

Temperature in Celsius is an example of ratio data becoz it has a true zero

Which of the following is NOT an example of an intangible population?

The total number of cars in a parking lot.

What is a variable in statistics?

A characteristic or attribute that can take different values.

Teacher analyzes test scores to understand variability. Which measure does NOT help in accurately measuring variability?

Variance measures the average squared deviation from the median

collect, organise,summarise,analyse, present, interpret,decision from data.

What is the most important requirement for using probability sampling techniques?

The list of population, everyone an equal chance of being chosen

Which of the following sentences WRONG describe the difference between descriptive (D) and inferential (I) statistics?

I only describe data without making any decision about a larger population

Which of the following sentences TRUE describes the difference between a population (N) and a sample (n) in statistics?

A N includes all individuals of interest, while a n is a subset of that N.

What is the key difference between nominal (N) and ordinal (O) data in qualitative data types?

O is a ranked order, while N without any ranking.

Which of the following does NOT correctly describe how to interpret a histogram?

Gaps between bars indicate missing values.

Which of the following does NOT correctly describe measures of central tendency?

Central tendency measures data variability.

A teacher analyzes test scores: 45, 50, 52, 90, 48, 51. Which statement about outliers is FALSE?

Outliers always improve data accuracy.

Which statement about a normal probability plot is FALSE?

It is only used for measuring central tendency.

A scientist uses a boxplot to study test scores. Which statement is TRUE?

The interquartile range (IQR) is represented by the box.

Selection of appropriate statistical techniques for data summarisation

Symmetrical Distribution - Mean, mean mode

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CHAPTER 1 TEST QUIZ

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Questions 21

Answers

1
Which of the following sentences does NOT correctly describe a parameter in statistics?
The mean height of all basketball players in a national league
The standard income of all residents in a city used in economic studies.
The true proportion of defective products in a factory’s entire production.
The mean test score of a group of 50 students from 200 standard 1 student.
2
Which of the following does NOT correctly describe the difference between interval and ratio data?
Ratio data has a true zero, while interval data does not
Height and weight are examples of ratio data because they have a true zero.
Interval data can have negative values, but ratio data canno
Temperature in Celsius is an example of ratio data becoz it has a true zero
3
Which of the following is NOT an example of an intangible population?
The collection of customer satisfaction levels for a product.
The group of emotions experienced by students before an exam.
The set of opinions of voters in an election.
The total number of cars in a parking lot.
4
What is a variable in statistics?
A characteristic or attribute that can take different values.
A type of graph used to display numerical data.
A mathematical formula used to calculate probability.
A characteristic or attribute that never changes in a dataset.
5
Teacher analyzes test scores to understand variability. Which measure does NOT help in accurately measuring variability?
Variance measures the average squared deviation from the mean.
Standard deviation indicates how spread out the scores are.
Range shows the difference between the highest and lowest scores.
Variance measures the average squared deviation from the median
6
The median is affected less than the mean by extremely high or extremely low values.
True
False
7
What is Statistics
collect, organise, analyse, present, interpret and make decision from data.
collect, organise,summarise,analyse, present, interpret,decision from data.
collect, organise, summarise, analyse, present and make decision from data.
collect, organise, analyse, present, interpret & decision from judgment.
8
What is the most important requirement for using probability sampling techniques?
The researcher must personally select participants based on their expertis
The list of population, everyone an equal chance of being chosen
Probability sampling is only used for qualitative study, not quantitative.
Only small populations can be studied using probability sampling techniques
9
Which of the following sentences WRONG describe the difference between descriptive (D) and inferential (I) statistics?
Using a sample survey to predict election results for country is an I
D summarize and organize data, while I make prediction from a sample.
I only describe data without making any decision about a larger population
Calculating the average test score of students in the class is a D.
10
Which of the following sentences TRUE describes the difference between a population (N) and a sample (n) in statistics?
A population is always smaller than a sample in statistical studies.
A n and a N are the same big dataset.
A N includes all individuals of interest, while a n is a subset of that N.
A n includes every individual in a group, while a N is only a small part it
11
What is the key difference between nominal (N) and ordinal (O) data in qualitative data types?
N is always more important than O in research.
N has a meaningful order, while O has no specific ranking.
Both N and O can be measured using numerical values.
O is a ranked order, while N without any ranking.
12
Which of the following does NOT correctly describe how to interpret a histogram?
Gaps between bars indicate missing values.
The height of bars represents frequency.
The spread of bars shows data distribution.
The shape helps identify skewness and trends.
13
Which of the following does NOT correctly describe measures of central tendency?
The mean is the average of all values.
The median is the middle value in ordered data.
Central tendency measures data variability.
The mode is the most frequently occurring value.
14
A manager selects 50 luxury watch buyers to gather insights on a new brand, believing their opinions are most relevant.
Judgment sampling
Voluntary sampling
Convenience sampling
Random sampling
15
A teacher analyzes test scores: 45, 50, 52, 90, 48, 51. Which statement about outliers is FALSE?
Outliers always improve data accuracy.
90 is an outlier because it is much higher than the rest.
Outliers can affect the mean significantly.
Outliers can indicate errors or rare events.
16
A student scored 56 on a test. The scores are sort in ascending order and 51 students in total. Find position of D₃?
15th position
16th position
18th position
17th position
17
Which statement about a normal probability plot is FALSE?
It helps check if data follows a normal distribution.
It is only used for measuring position.
It is only used for measuring central tendency.
Data points on a straight line suggest normality.
18
Qualitative Data can be counted and ordered or ranked
False
True
19
A scientist uses a boxplot to study test scores. Which statement is TRUE?
Boxplots do not help in identifying outliers.
The interquartile range (IQR) is represented by the box.
The length of the box has no meaning in statistics.
Boxplots cannot show the median of the data.
20
Selection of appropriate statistical techniques for data summarisation
Skewed Distribution - standard deviation and variance
Categorical (Ordinal) - time series
Symmetrical Distribution - Mean, mean mode
Categorical (Nominal) - stem and left plot
21
Data is a collection of facts, figures, and statistics used for analysis.
False
True

CHAPTER 1 TEST QUIZ Flashcards | StudBud