Help
Contact
For teachers and institutes
Search courses, problems, tests…
A
A
>_
StemPy Lab
Courses ▾
Problems ▾
Practice ▾
Mock Tests
Classes
Community ▾
A
A
Ten readings have a mean of 30 and a standard deviation… | StemPy Lab
Quizzes
/
Ten readings have a mean of 30 and a standard deviation of 5. One reading of 24 is found to be wrong, and the correct reading is 34. What is the variance of the corrected readings?
Mathematics
Hard
High School (11–12)
Statistics and Probability › Statistics
AP
A-Level
IB
AEEE (Amrita)
AMUEEE
AP EAPCET
+20 more exams
BCECE
CMI Entrance
COMEDK UGET
GUJCET
IAT (IISER)
ISI Admission Test
JCECE
JKCET
KCET
KEAM
KIITEE
LPUNEST
MET (Manipal)
MHT-CET
NEST (NISER)
Created by
StemPy Lab
Ten readings have a mean of
30
30
30
and a standard deviation of
5
5
5
. One reading of
24
24
24
is found to be wrong, and the correct reading is
34
34
34
. What is the variance of the corrected readings?
31
31
31
25
25
25
22
22
22
20
20
20
Check Answer
Log in to save
Tag someone
⚑ Report
← All Quizzes
← A data set has a lower quartile of 18 and an upper quartile of 30. A reading above the upper fence, which is 1.5 interquartile ranges above the upper quartile, is marked as an outlier. What is the smallest whole number that would be marked as an outlier?
The figure shows box plots of the marks of two classes, P and Q, on the same scale. Class P has the box from 40 to 60 with the median at 50. Class Q has the box from 45 to 85 with the median at 70. Which statement about the two classes is correct? →
More on
Statistics and Probability › Statistics
Discussion (0)
Log in
to join the discussion.
Loading…
OJEE
SRMJEEE
TS EAPCET
UPESEAT
VITEEE
All questions on this topic →
Problems on this topic
A farmer records the number of days x since a seedling was planted and its height y in centimetres…
Hard
A dealer records the age x of six cars in months and the value y of each in hundreds of pounds: x =…
Medium
The regression lines of y on x and of x on y for some data have the correlation r = 0.6, with σx =…
Advanced
A study of two variables gives the two regression lines 6x - 5y + 10 = 0 and 10x - 3y - 26 = 0…
Hard
All problems on this topic →