STA301 Online Quiz # 1
Monday, October 25, 2010 Posted In STA Edit ThisQ
Question # 3 of 10 ( Start time: 07:36:37 PM ) Total Marks: 1
If in a set of discrete values of observations, 50 percent values are greater than 25, then Q2 is
Select correct option:
20
25
50
75
Question # 4 of 10 ( Start time: 07:37:54 PM ) Total Marks: 1
Which graph is used for a time series data?
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Histogram
Hitorigram
Frequency curve
Frequency polygon
Question # 5 of 10 ( Start time: 07:38:49 PM ) Total Marks: 1
If the mean of the two observations is 11.5, then the median of these two observations will be:
Select correct option:
8.5
9.5
11.5
10.5
Question # 6 of 10 ( Start time: 07:40:08 PM ) Total Marks: 1
What is/are the mode for the following data: M,V,E,M,T,U,I,E
Select correct option:
M,U
E,U
M,E
M,T
Question # 7 of 10 ( Start time: 07:41:08 PM ) Total Marks: 1
Fill in the missing words to the quote: “Statistical methods may be described as methods for drawing conclusions about …………based on………… computed from the ………….”
Select correct option:
Populations, parameters, samples
Statistics, parameters, samples
Parameters, statistics, populations
Populations, statistics, samples
Question # 8 of 10 ( Start time: 07:42:15 PM ) Total Marks: 1
What is the median of the data, 1, 2, 3, 5, 6, 7, 7, 8, 8, 9:
Select correct option:
No median
6.5
6
7, 8
Question # 9 of 10 ( Start time: 07:43:27 PM ) Total Marks: 1
Which of the following is not included in measures of central tendency:
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Quartile deviation
Harmonic mean
Geometric mean
Arithmetic mean
Question # 10 of 10 ( Start time: 07:44:26 PM ) Total Marks: 1
The sum of squares of deviations from mean is:
Select correct option:
Maximum
Minimum
Zero
Undefined
Question # 1 of 10 ( Start time: 07:49:03 PM ) Total Marks: 1 The beginnings of a cumulative
frequency distribution are presented below. What is the next number in the Cumulative Frequency column?
Classes Frequency Cumulative Frequency 6.1 to 8 1 1 8.1 to 10 2 10.1 to 12 3
0
1
2
3
What is the mode of the data, 1, 5, 7, 3, 9, 2, 6, 8:
3
5
7
no mode
Data arranged in order of magnitude are called:
Raw data
Grouped data
Arrayed data
Frequency distribution
Range of the values 10, 19, -9, -15, -28, -26, -25 is:
+18
-18
+19
-19
Q
Sum of deviation of values from their mean is:
Maximum
Minimum
Zero
Un-predicted
Q
Which method is used for obtaining the relative frequencies?
Dividing the mid points by the frequency
Dividing the mid points by the total frequency
Dividing the frequency by the total frequency
Dividing the total frequency by the frequency
Question # 1 of 10 ( Start time: 08:10:46 PM ) Total Marks: 1
The data for an ogive is found in which distribution:
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A cumulative frequency distribution
A joint frequency distribution
A frequency distribution
A relative frequency distribution
Question # 2 of 10 ( Start time: 08:11:52 PM ) Total Marks: 1
Which of the following statements about histogram rectangles is correct?
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The rectangles are proportional in height to the number of items falling in the classes
There are generally five rectangles in every histogram
Heights all of rectangles are equal
None of these
Question # 4 of 10 ( Start time: 08:14:17 PM ) Total Marks: 1
When more values are lying at the start of the distribution, it is:
Select correct option:
U shape figure
Symmetrical distribution
Positively skewed
Negatively skewed
Question # 5 of 10 ( Start time: 08:15:36 PM ) Total Marks: 1
Which graph is used for a time series data?
Select correct option:
Histogram
Hitorigram
Frequency curve
Frequency polygon
Question # 6 of 10 ( Start time: 08:16:35 PM ) Total Marks: 1
Which one of the following is less than mode for a symmetrical distribution:
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2nd Quartile
51th Percentile
50th Percentile
4th Decile
Question # 7 of 10 ( Start time: 08:17:40 PM ) Total Marks: 1
How to construct a class interval?
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Divide the class frequencies in half
Divide the class frequency by the number of observations
Find the difference between consecutive lower class limits
Count the number of observations in the class
What is the mode in the word STATISTICS:
Select correct option:
S
T
I
S & T
Question # 9 of 10 ( Start time: 08:19:22 PM ) Total Marks: 1
The graph of cumulative frequency distribution is called:
Select correct option:
Frequency polygon
Ogive
Frequency curve
Historigram
Question # 10 of 10 ( Start time: 08:20:06 PM ) Total Marks: 1
Tabulation is the process of arranging data into:
Select correct option:
Different classes
Rows
Columns
Rows and Columns
Q
From the given data, which one of the following chart we can draw: Year Turnover 1965 350000 1966 42000 1967 43500 1968 48000 1969 48500
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Simple bar chart
Multiple bar charts
Component bar chart
Pie chart
Q
The collection of all outcomes for an experiment is called
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a sample space
the intersection of events
Q
When data are labels to identify an attribute of element, the measurement scale is
Select correct option:
Nominal
Ordinal
Interval
Ratio
Q
What is the mode of the data, 1, 5, 7, 3, 9, 2, 6, 8, 7:
Select correct option:
No mode
7
5
9
Q
Range of the values 10, 19, -9, -15, -28, -26, -25 is:
Select correct option:
+18
-18
+19
-19
Q
Which letter(s) is/are the mode in the word of STATISTICS:
Select correct option:
S,T
T,C
I,T
]
Q
Which one of the following is equals to mean for a symmetrical distribution:
Select correct option:
2nd Quartile
4th Decile
45th Percentile
51th Percentile
Q
The postal code of city Lahore is 54000. This is an example of which data?
Select correct option:
Qualitative data
Discrete data
Quantitative data
Continuous data
Q
graph of cumulative frequency distribution is called:
Select correct option:
Frequency polygon
Ogive
Frequency curve
Historigram
Q
The beginnings of a cumulative frequency distribution are presented below. What is the next number in the Cumulative Frequency column? Classes Frequency Cumulative Frequency 6.1 to 8 1 1 8.1 to 10 2 10.1 to 12 3
Select correct option:
0
1
2
3
Q
The algebraic sum of deviations from mean is:
Select correct option:
Maximum
minimum
Zero
undefined
Q
Question # 2 of 10 ( Start time: 12:00:37 PM ) Total Marks: 1
Range of the values -2,-3,-4,-3,-9,-2,-8,-1,0 is
Select correct option:
0
-9
8
9
Question # 3 of 10 ( Start time: 12:01:45 PM ) Total Marks: 1
A frequency polygon is obtained by plotting the class frequencies against what?
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Class boundaries
Relative frequencies
Cumulative frequencies
Mid-points of the classes
Q
Range of the values 10, 19, -9, -15, -28, -26, -25 is:
Select correct option:
+18
-18
+19
-19
Q
Question # 5 of 10 ( Start time: 12:05:09 PM ) Total Marks: 1
What type of data is collected in population census?
Select correct option:
Grouped data
Secondary data
Primary data
Array data
Q
Question # 6 of 10 ( Start time: 12:06:31 PM ) Total Marks: 1
Mean is affected by the change of
Select correct option:
Origin only
scale only
(c) (a) & (b) only
not affected
Q
Question # 7 of 10 ( Start time: 12:07:55 PM ) Total Marks: 1
Tabulation is the process of arranging data into:
Select correct option:
Different classes
Rows
Columns
Rows and Columns
Question # 8 of 10 ( Start time: 12:08:30 PM ) Total Marks: 1
How to find the class midpoint?
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Half the sum of upper class limit and lower class limit
Find the difference between consecutive lower limits
Count the number of observations in the class
Divide the class frequency by the number of observations
Q
Question # 9 of 10 ( Start time: 12:10:07 PM ) Total Marks: 1
Fill in the missing words to the quote: “Statistical methods may be described as methods for drawing conclusions about …………based on………… computed from the ………….”
Select correct option:
Populations, parameters, samples
Statistics, parameters, samples
Parameters, statistics, populations
Populations, statistics, samples
Q
which of the following is not an example of compressed data
Select correct option:
Data array
Frequency distribution
Histogram
Ogive
Q
As a general rule, statisticians tends to use which of the following number of classes when arranging the data
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Fewer than 5
Between 5 & 20
Between 8 & 15
More than 20
Q
Which of the following comes first to make frequency distribution:
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No. of Groups
Class interval
Range
Tally marks
Q
Question # 9 of 10 ( Start time: 12:32:41 PM ) Total Marks: 1
Statistic is a numerical quantity, which is calculated from
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Data
Observations
Population
Sample
Q
Question # 1 of 10 ( Start time: 02:51:38 PM ) Total Marks: 1
What is the value of class mark for the given class 20-24?
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20
24
22
44
Q
Question # 2 of 10 ( Start time: 02:52:58 PM ) Total Marks: 1
Which method is used for obtaining the relative frequencies?
Select correct option:
Dividing the mid points by the frequency
Dividing the mid points by the total frequency
Dividing the frequency by the total frequency
Dividing the total frequency by the frequency
Q
Question # 4 of 10 ( Start time: 02:54:28 PM ) Total Marks: 1
What is the mode in the word MATHEMATICS:
Select correct option:
No mode
M
A
T, A, M
Q
Question # 5 of 10 ( Start time: 02:54:58 PM ) Total Marks: 1
The branch of Statistics that is concerned with the procedures and methodology for obtaining valid conclusions is called:
Select correct option:
Descriptive Statistics
Advance Statistics
Inferential Statistics
Sampled Statistics
Q
Question # 6 of 10 ( Start time: 02:56:06 PM ) Total Marks: 1
What is/are the mode for the following data: 1,1,2,2,5,5,7,7
Select correct option:
1,2
1,2,5
1,2,5,7
No mode in the data
Q
Question # 7 of 10 ( Start time: 02:56:27 PM ) Total Marks: 1
The algebraic sum of deviations from mean is:
Select correct option:
Maximum
minimum
Zero
undefined
Q
Question # 8 of 10 ( Start time: 02:56:52 PM ) Total Marks: 1
If a curve has a longer tail to the right, it is called
Select correct option:
Positively skewed
Negatively skewed
J-shaped
Symmetric
Q
Question # 9 of 10 ( Start time: 02:58:08 PM ) Total Marks: 1
Range of the values 10, 19, -9, -15, -28, -26, -25 is:
Select correct option:
+18
-18
+19
-19
Q
Question # 10 of 10 ( Start time: 02:59:26 PM ) Total Marks: 1
The data which have not undergone any statistical treatment is called
Select correct option:
Discrete data
secondary data
Primary data
qualitative data
Q
According to the property of parameter, it is
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Variable
Constant
Discrete
Continuous
Q
Question # 1 of 10 ( Start time: 02:34:23 PM ) Total Marks: 1
When data are labels to identify an attribute of element, the measurement scale is
Select correct option:
Nominal
Ordinal
Interval
Ratio
Q
Question # 3 of 10 ( Start time: 02:35:28 PM ) Total Marks: 1
What is the median of the data, 1, 2, 3, 5, 6, 7, 7, 8, 8, 9:
Select correct option:
No median
6.5
6
7, 8
Q
Question # 4 of 10 ( Start time: 02:36:21 PM ) Total Marks: 1
The value that has half of the observations above it and half the observations below it is known as:
Select correct option:
Mean
Median
Mode
Standard deviation
Q
Question # 6 of 10 ( Start time: 02:37:32 PM ) Total Marks: 1
For given data, discuss the shape of the distribution: X f 0.2 8 1.2 15 2.2 23 3.2 40
Select correct option:
Positively skewed
Negatively skewed
Symmetric curve
U- Shaped curve
Q
Question # 7 of 10 ( Start time: 02:39:00 PM ) Total Marks: 1
Sum of deviation of values from their mean is:
Select correct option:
Maximum
Minimum
Zero
Q
Question # 8 of 10 ( Start time: 02:39:22 PM ) Total Marks: 1
The following data shows the number of hours worked by 120 mathematical students. Number of Hours Frequency 0 - 5 10 5 - 10 50 10 - 15 40 15 - 20 20 What is its class interval?
Select correct option:
5
10
20
25
Q
Question # 9 of 10 ( Start time: 02:40:32 PM ) Total Marks: 1
The data for an ogive is found in which distribution:
Select correct option:
A cumulative frequency distribution
A joint frequency distribution
A frequency distribution
A relative frequency distribution
Question # 10 of 10 ( Start time: 02:41:00 PM ) Total Marks: 1
If ‘42’ is a leading digit in 42350, than what are the trailing digits in the observation to display a ‘Stem-and –Leaf display’.
Select correct option:
50
350
2350
42350
Question # 1 of 10 ( Start time: 03:06:30 PM ) Total Marks: 1
Which scale will you use to measure the temperature?
Select correct option:
Nominal scale
Interval scale
Ratio scale
Ordinal scale
Q
Question # 2 of 10 ( Start time: 03:07:32 PM ) Total Marks: 1
The value of the middle term in a ranked (ordered) data set is called the
Select correct option:
Mode
Mean
Median
Harmonic mean
Q
The ordinal scale is also known as?
Select correct option:
Ratio scale
Ranking scale
Nominal scale
Interval scale
Q
Question # 4 of 10 ( Start time: 03:09:24 PM ) Total Marks: 1
What is the main objective of Descriptive Statistics?
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To test the population properties
To describe the data we collected
To infer something about the population
To make estimates
Q
Question # 5 of 10 ( Start time: 03:10:38 PM ) Total Marks: 1
For given data, discuss the shape of the distribution: X f 3 45 5 25 5 10 7 23 9 47
Select correct option:
Positively skewed
Negatively skewed
Symmetric curve
U- Shaped curve
Q
Question # 6 of 10 ( Start time: 03:11:56 PM ) Total Marks: 1
Which method is used for obtaining the relative frequencies?
Select correct option:
Dividing the mid points by the frequency
Dividing the mid points by the total frequency
Dividing the frequency by the total frequency
Dividing the total frequency by the frequency
Q
Question # 7 of 10 ( Start time: 03:13:14 PM ) Total Marks: 1
What is/are the mode for the following data: 1,m,d,n,,2,d,2,d,s,5,5,7
Select correct option:
2
d
5
2,d,5
Q
Question # 8 of 10 ( Start time: 03:14:16 PM ) Total Marks: 1
Range of the values -2,-3,-4,-3,-9,-2,-8,-1,0 is
Select correct option:
0
-9
8
9
Question # 10 of 10 ( Start time: 03:15:42 PM ) Total Marks: 1
What type of data is collected in population census?
Select correct option:
Grouped data
Secondary data
Primary data
Array data
