When scores are grouped, it is desirable to use ____________ class intervals.

When scores are grouped, it is desirable to use ____________ class intervals.

Q & A
1. Question 1
When scores are grouped, it is desirable to use ____________ class intervals.
a. 5–10

b. 5–20

c. 10–20

d. 15–20

 

2. Question 2
The lowest score is 23 and the highest score is 87. The range is:
a. 63.0

b. 64.5

c. 64.1

d. 64.0
3. Question 3
The real limits of the interval 50–54 are:
a. 49.0-55.0

b. 49.5-54.5

c. 50.5-53.5

d. 50.0-64.0

4. Question 4
Base your answer to the next question on the following distribution:
Score limits ƒ cum ƒ cum %
60–64 4 20 100
55–59 8 16 80
50–54 6 8 40
45–49 0 2 10
40–44 2 2 10
n = 20
There are 16 scores falling below:
a. 60.0

b. 59.5

c. 59.0

d. 57.0

 

5. Question 5
The best graph for categorical (qualitative) data is the:

a. Histogram.

b. Frequency polygon.

c. Bar diagram.

d. Polyconic projection.

 

6. Question 6
(Points: 10)
The midpoint of the interval 23–26 is:
a. 25.

b. 24.

c. 24.5

d. None of the above.

 

7. Question 7
Which graph is best suited for a frequency distribution representing a continuous variable?

a. Histogram.

b. Percentage frequency histogram.

c. Bar diagram.

d. Frequency polygon.

8. Question 8
The Y-axis is also called the:

a. Abscissa.

b. Independent variable.

c. Horizontal axis.

d. Ordinate.
9 Question 9
It is customary to draw the graph of a frequency distribution so that the height is ____________ the width.

a. ½ of.

b. ¾ of.

c. Equal to.

d. 1 ¼ times.
In constructing a frequency polygon, the frequency for the interval 40–49 would be plotted at:

a. 39.5

b. 44

c. 44.5

d. 49.5

 

 

ORDER THIS ESSAY HERE NOW AND GET ADISCOUNT !!!

 

You can place an order similar to this with us. You are assured of an authentic custom paper delivered within the given deadline besides our 24/7 customer support all through.

 

[order_calculator]