Measures of Central Tendency Test

Result

Measures of Central Tendency Test - 6

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

What is the median of the following set of scores? 19, 5, 12, 10, 14?

A
10

B
14

C
19

D
12

Solution

Arranging the data, in ascending order, Median = size of (N+1)/2 item i.e. 12 .
Question 2
1 / -0

Approximately what percentage of scores falls within one standard deviation of the mean in a normal distribution?

A
0.95

B
0.34

C
68%

D
0.99

Solution

As per empirical rule, about 68% score falls in one standard deviation of mean.
Question 3
1 / -0

Suppose a researcher is concerned with a nominal scale that identifies users versus nonusers of bank credit cards. The measure of central tendency appropriate to this scale is the

A
Median

B
Mode

C
average

D
Mean

Solution

Here, Mode is the most appropriate measure. Mode is the most frequently observed data value.
Question 4
1 / -0

What is the mean of this set of numbers: 4, 6, 7, 9, and 2000000?

A
4

B
7

C
400005.2

D
7.5

Solution

Arithmetic mean by direct method isthe sum of all observations in a seriesdivided by the total number ofobservations. Mean = 4+6+7+9+2000000 = 2000026/5= 400005.2
Question 5
1 / -0

The mean of 11 numbers is 7. One of the numbers, 13, is deleted. What is the mean of the remaining 10 numbers?

A
7.7

B
6

C
5.8

D
6.4

Solution

Given Sum of all observations = 11x7=77

Correct Sum of all observations = 77-13 = 64

Correct total number of observations= 11-1= 10

Correct Mean = Correct Sum of all observations/ Correct total number of observations= 64/10 = 6.4
Question 6
1 / -0

The mean of ten numbers is 58. If one of the numbers is 40, what is the mean of the other nine?

A
162

B
540

C
18

D
60

Solution

Mean is calculated as the sum of the values of all observations divided by the number of observations
Mean = 58, N= 10
sum of the values of all observations = 58 x 10 = 580
Corrected sum of the values of all observations = 580 - 40 = 540
Corrected number of observations = 10 – 1 = 9
Correct Mean = 540/9 = 60
Question 7
1 / -0

A batsman scores the following number of runs in 6 innings: 36, 35, 50, 46, 60, and 55. Calculate the mean runs scored in an inning.

A
45

B
48

C
47

D
46

Solution

Mean is calculated as the sum of the values of all observations divided by the number of observations
N= 6
Sum of the values of all observations = 36+35+50+46+60+55 = 282
Mean = 282/6 = 47
Question 8
1 / -0

If the mean of five observations x, x + 2, x + 4, x + 6, x + 8 is 11. Find the mean of 1st three observations

A
10

B
8

C
7

D
9

Solution

Mean is calculated as the sum of the values of all observations divided by the number of observations
N= 3
Sum of the values of 1st. three observations = 11+9+7= 27
Mean = 27/3 = 9
Question 9
1 / -0

The mean of 40 observations was 160. It was detected on re-checking that the value 165 was wrongly copied as 125 for computation of mean. Find the correct mean.

A
650

B
151

C
161

D
4

Solution

Mean is calculated as the sum of the values of all observations divided by the number of observations
N= 40 , Mean = 160
Sum of the values of all observations = 40 x 160 = 6400
Sum of the values of all observations after correction= 6400 -125 = 6275+165 = 6440
Correct Mean = 6440/40 = 161

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Measures of Central Tendency Test - 6

Result

Measures of Central Tendency Test - 6

Score

-

Rank

-

SHARING IS CARING

Question 1

10

14

19

12

Solution

Question 2

0.95

0.34

68%

0.99

Solution

Question 3

Median

Mode

average

Mean

Solution

Question 4

4

7

400005.2

7.5

Solution

Question 5

7.7

6

5.8

6.4

Solution

Question 6

162

540

18

60

Solution

Question 7

45

48

47

46

Solution

Question 8

10

8

7

9

Solution

Question 9

650

151

161

4

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.