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Managerial Statistics
Managerial Statistics
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1
What is the frequency polygon used for?
Visualizing grouped frequency distributions with bars
Displaying categorical data proportions
Comparing multiple distributions on the same graph
Representing cumulative frequencies of data
2
Why is a cumulative frequency graph (ogive) useful?
To determine frequencies for individual classes
To estimate how many data points are below a certain value
To show the distribution of percentages across classes
To visualize the spread of categorical data
3
Gender is a variable.
Qualitative
Quantitative
None of the above
Both A&B
4
What is a primary Source?
Interview
Magazine
Newspapers
Websites
5
In a grouped frequency distribution, how is the class width calculated?
Adding the range to the highest value
Dividing the range by the number of classes
Dividing the total frequency by the range
Subtracting the lowest value from the highest value
6
In constructing a grouped frequency distribution, how do you determine the number of classes?
Choose a value between 5 and 20, depending on the data size
Divide the total data points by the class width
Use a predetermined range based on the data
Find the midpoint of the dataset
7
means assumptions or presumptions or claim.
Variable
B) Sample
Population
Hypothesis
8
point estimator is a statistic that provides an estimate of a
Covariance
Mean variance
Population parameter
Sample statistics
9
What does the height of a bar in a histogram represent?
The cumulative frequency of the data
The frequency of the class
The class interval
The percentage of data values in that class
10
Which graph is used to represent categorical data?
Frequency Polygon
Histogram
Ogive
Bar Chart
11
What is the purpose of the class midpoint in a grouped frequency distribution?
To represent a single value for each class interval
. To determine the total frequency
To calculate the average frequency of the dataset
To find the cumulative frequency
12
Which source of data the researcher used when he distributed survey to collect data from the population?
Old Data
Secondary Data.
Primary Data
None of the above
13
If the sample not be large enough representative of the population that mean there
population errors
non-population errors
sampling errors
non-sampling errors
14
What is the primary purpose of a frequency distribution
To compare two datasets
To eliminate outliers
To organize raw data into a readable format
To calculate the mean of the dataset
15
Which of the following graphs is used to display cumulative frequencies?
Frequency Polygon
Pie Chart
Histogram
Ogive
16
The ball is a mix of red, white, blue, green, orange and yellow. Describe the type of data for the above situation.
Quantitative data
Qualitative data
All of above
Mix data
17
statistics in business can be likened to the third eye through which any business enterprise can see the future
third eye
second eye
Both A&B
First eye
18
What type of data is best suited for an ungrouped frequency distribution?
Continuous data with large intervals
Categorical data
Data with a large range
Data with a small range or discrete data
19
Indicate the type of Mode from the following data. (1,2,2,3,4,5,5,6,7,8)
Modal
Multi Modal
No Mode
Uni Modal
20
What is the primary difference between a histogram and a bar chart?
A histogram requires labeled axes, while a bar chart does not.
A histogram uses continuous data, while a bar chart uses categorical data.
A histogram shows data in lines, while a bar chart uses bars.
All apple
21
Which type of distribution is characterized by data values clustering around one or more specific values?
Uniform distribution
Categorical distribution
Homogeneous distribution
Heterogeneous distribution
22
Which of the following is a necessary step when constructing a pie chart?
Subtract the smallest value from the largest value
Convert raw data into frequencies
Divide the data into intervals
Tally the frequencies for each class
23
Data collected by a person for his own use for the first time is
All of the above
Primary Data
Qualitative data
Secondary Data
24
Dividing the sum of all measurements by number of measurements finds the
Median
Mean
Variance
Standard deviation
25
What is the first step in constructing a grouped frequency distribution?
Calculate the relative frequencies
Determine class intervals
Find the highest and lowest values in the dataset
Tally the data values
26
Which of the following refers to measures of central tendency?
Mode
All of the above
Mean
Median
27
What is the midpoint of the class “50-100”.?
65
50
70
75
28
Tables and graphs are an example of
Inferential statistics tools
None of Above
descriptive statistics tools
A & B
29
A cumulative frequency distribution shows:
The number of data values in each class
The percentage of data within a single class
The number of data values less than or equal to a specific class boundary
The total number of classes
30
Newspaper is the tool for collecting
Both A&B
None of the above
Secondary Data
Primary Data
31
Find out the upper limit of the class “30-40”.
30
40
70
10
32
A part of population is called
Variable
Universe
All of the above
Sample
33
Number of students in the class is variable
Discrete
Both A&B
Continuous
None of the
34
Making conclusion about a population on the basis of a sample is
Inferential statistics
Inferential mathematics
Probability analysis
Inferential analysis
35
Which of the following is not a type of frequency distribution?
Grouped frequency distribution
Categorical frequency distribution
Ungrouped frequency distribution
Histogram frequency distribution
