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STA 301 Quiz # 01 Opening date 20-11-2014 close date 21-11-2014 11.59pm Share your quizes and discuss

STA 301 Quiz # 01 Opening date 20-11-2014 close date 21-11-2014 11.59pm Share your quizes and discuss

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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?

• 5
• 10
• 20
• 25

The mode value from raw data can be obtained by the help of:

• Dot plot
• Stem and leaf
• Bar chart
• Pie chart

For the following Distribution. Items Expenditure Food 50 Clothing 30 House Rent 20 Fuel and Light 15 Miscellaneous 35 Total 150 What will be the angle of Miscellaneous for constructing the pie chart?

• 120
• 36
• 84
• 48

The Sum of the deviations of the observations from their mean is:

• Maximum
• Minimum
• Zero
• Un-predicted

For given data, discuss the shape of the distribution: X f 0 2 1 3 2 5 3 9 4 13 5 15 6 20

• Symmetric
• Positively Skewed
• Negatively Skewed
• None of these

Which of the following is Not a common measure of central tendency?

• Mode
• Range
• Median
• 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 media
• It is the middle value of the data values

When a frequency distribution involves "open-end" classes, then which average is appropriate?

• Mean
• Mode
• Median
• None of these

Mid point is equal to:

• Half of the sum of upper class limit and lower class limit
• The difference between consecutive lower limits
• Total number of observations fall a in a class
• All of these

From the following table, what is lower class boundry when mode is calculated? Class Boundaries Frequency 20 - 30 8 30 - 40 7 40 - 50 10 50 - 60 40 60 - 70 11

• 10
• 40
• 50
• 11

Best of luck all students

NOOR FATIMA

1:-      Which of the following terms best describes data that were originally collected at an earlier time by a different person for a different purpose?

Primary data

Secondary data     ANS

Experimental data

Field notes

2:-        The extremely positive skewed curve is also known as:

Frequency curve

U-shaped curve

J-shaped curve

Reverse J-shaped curve

3:-        From the following table, derive the relative frequency of the 4 Class? Classes Frequency 17.5 - 19.5 9 19.5 - 24.5 188 24.5 - 29.5 160 29.5 - 34.5 123 34.5 - 44.5 84 44.5 - 59.5 15

1

0.212435

0.025907

0.015544

4:-      Which is appropriate average for finding the average speed of a car:

Mean

Geometric mean

Harmonic mean

Weighted mean

5:       For given data, discuss the shape of the distribution: X f 0 2 1 3 2 5 3 7 4 5 5 3 6 2

Positively skewed

Negatively skewed

Symmetric curve

U- Shaped curve

6:-          In statistics, conducting a survey means

Collecting information from elements

Making mathematical calculations

Drawing graphs and pictures

None of the above

7:      From the following table, what is lower class boundry when mode is calculated? Class Boundaries Frequency 29.95 - 32.95 8 32.95 - 35.95 87 35.95 - 38.95 110 38.95 - 41.95 104 41.95 - 44.95 101

38.95

32.95

8:     The data which has not undergone any statistical treatment is called:

Discrete data

econdary data

Primary data

Qualitative data

9:     The Sum of the deviations of the observations from their mean is:

Maximum

Minimum

Zero

Un-predicted

10          From the given data, which one of the following chart we can draw: Year Area Production 1965-66 2866 1588 1970-71 3233 2229 1975-76 3420 1937

Simple bar chart

Multiple bar charts

11:       Which of the following technique is not used to represent the bivariate qualitative data?

Line Chart

12:             What is the median for the following data  1,1,2,2,5,5,7,7,7,

5

13:       In case of a frequency distribution,the second quartile is given by the formula:

I+2h/f(n/2-c)

I+f/h(n/4-c)

I+f/h(2n/4-c)

I+h/f(2n/4-c)

14:       The mean is obtained by

Divides a set of data into two equal parts

Most frequent value in the data set

Dividing the sun of all observations by their number

None of these

15:      A frequency polygon is obtained by plotting the class frequencies against:

Mid-point of the classes

16:         A flight of migrating honeybees to America is an example of:

Infinite population

17: Which of the following is not an example of random sampling?

Purposive sampling

18: Statistic is a numerical quantity,which is calculated from

Data

1

2

3

4

5

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