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L9,10 Mathematical presentation

 L9,10 Mathematical presentation part 1




L9,10 part2 , Mathematical presentation




DATA

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MCQ

1- The mean of a sample is:

a. always equal to the mean of the population

b. always smaller than the mean of the population

c. computed by summing the data values and dividing the sum by (n - 1)

d. computed by summing all the data values and dividing the sum by the number of items

e. None of the above answers is correct.


2-The measure of spread most affected by one extreme value is the:

a. Interquartile range

b. Range

c. Standard deviation

d. Mean


3- The median is the value that:

a. Is midway between the positive and negative values

b. Occurs most often

c. central observation in a series of observation after arranging them in an ascending or descending manner.

d. Is statistically closest to all of the values in the distribution


4-Weight of group of children are 40,15,10,10,20 calculate the following:

-Mean is:

a-19

b-10

c-13

d-9


- mode is:

A -5

B -15

C -9

D -10


- median is:

a- 12

b- 18

c- 10

d- 15


5-If the (IP) of 8 cases were (2, 5, 4, 6, 3, 6, 8, 6 hrs.) 

The mode will be:

a. 8 hrs.

b. 6 hrs.

c. 5 hrs.

d. 4 hrs.


The mean of (IP) will be:

a. 6 hrs.

b. 9 hrs.

c. 3 hrs.

d. 5 hrs.


The median of (IP) will be:

a. 4 hrs.

b. 5.5 hrs.

c. 6.5 hrs.

d. 6 hrs.

6- Suppose that you have the following set of numbers: 8, 4, 5, 3,10, 7, 4, 15.

- The value of the mean is

a- 60

b- 40

c- 7

d- 45


-The value of the mode is …….

a- 2

b- 15

c- 4

d- 10


- the median is:

a- 5

b- 6

c- 10

d- 3



Answer

  1. 1-d

  2. 2-b

  3. 3-c

  4. 4-mean = 19

  5. mode =10

  6. median = 15

  1. 5-mode = 6

  2. mean = 5

  3. median = 5.5  

  1. 6-mean = 7

  2. mode =4

  3. median =6





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