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# STA301 statistics and probability Online Quiz No. 01 Spring 2014 Solution and Discussion Due Date:May 09, 2014 11:59 PM

Opening Date: May 08, 2014 12:00 AM

Due Date May 09, 2014 11:59 PM

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### Replies to This Discussion

Here is mine.

The value of the middle term in a ranked (ordered) data set is called the:
Mode
Mean
*Median
Harmonic mean

Which of the following is a true statement about the median?
It is always one of the data values
It is influenced by extreme values
Fifty percent of the observations are larger than the median
*It is the middle value of the data values

For a stem-and-leaf display
Make sure the stem value is only one digit

Which of the following is not a graph of Quantitative Variable?
Pie Chart

The weights of 7 students were measured and recorded as follows: 53.0, 54.5, 57.2 51.7, 57.4, 50.5, 52.8 The stem part is:
5,4,5,8,7

In case of a frequency distribution, the 7th decile is given by the formula:
l+ h/f (7n/10-c)

Which of the following relationship is true in a symmetrical distribution?
None of the above

Calculate range for the following data: 10, 32, 33, 34, 37, 42, 55,58, 70
20

Which of the display of the data is divided into two parts?
Stem and leaf display

Which of the following is a systematic arrangement of data into rows and columns?
Bar chart

Juste  thanks for sharing ...keep it up

sumaira shabbir gud keep it up & thanks for sharing

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my pleasure sir

STA301 statistics and probability Online Quiz .01

STA301 statistics and probability

Online Quiz .01

Opening Date: May 08, 2014 12:00 AM

Due Date: May 09, 2014 11:59 PM

Question # 1 of 10 ( Start time: 07:27:06 PM ) Total Marks: 1
Dividing mean deviation by mean we get a pure number known as
Select correct option:
Co-efficient of mean deviation*(ans)
Co-efficient
Co-efficient of quartile deviation
None of the above

Question # 2 of 10 ( Start time: 07:28:06 PM ) Total Marks: 1
Formula for Semi Interquartile Range is:
Select correct option:
(Q3-Q1)/2*(ans)
(Q1+Q3)/2
(Q1-Q3)
(Q1+Q3)

Question # 3 of 10 ( Start time: 07:29:25 PM ) Total Marks: 1
Which scale will you use to measure the temperature?
Select correct option:
Nominal scale
Interval scale*(ans)
Ratio scale
Ordinal scale

Question # 4 of 10 ( Start time: 07:30:57 PM ) Total Marks: 1
If Xo is the smallest value and Xm is the largest value in a data set then, range is defined by the relation:
Select correct option:
Xo
Xm
Xm-Xo*(ans)
Xo-Xm

Question # 5 of 10 ( Start time: 07:32:14 PM ) Total Marks: 1
Half of the observations are always larger than:
Select correct option:
Mean*(ans)
Median
Mode
Total

Question # 6 of 10 ( Start time: 07:32:55 PM ) Total Marks: 1
The difference between estimated value and the population value is called
Select correct option:
Sampling Error
Non Random Error
Non Sampling Error
Random Error*(ans)

Question # 7 of 10 ( Start time: 07:34:23 PM ) Total Marks: 1
The sum of squared deviations from mean is:
Select correct option:
Maximum
Minimum
Zero*(ans)
Undefined

Question # 8 of 10 ( Start time: 07:35:01 PM ) Total Marks: 1
For the given data 20, 13, 27, 0, -8 G. M will be:
Select correct option:
Negative*(ans)
Positive
Zero
Undefined

Question # 9 of 10 ( Start time: 07:36:02 PM ) Total Marks: 1
What is the median for the following data: 1,1,2,2,5,5,7,7,7
Select correct option:
1
2
5*(ans)
7

When the deviations (excesses and defects) from the true value tend to occur equally, it is called:
Select correct option:
Unbiased error*(ans)
Biased error
Systematic error
Mistake

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