Short Quiz

Question 1 of 5

Each value \(x\) is replaced by \(2x+3\). If the old mean is \(m\), what is the new mean?

A \(m+5\) B \(2m\) C \(2m+3\) D \(m+3\)

Select an option to see the answer, or skip this question.

Question 2 of 5

Which expression gives the mean when values \(x_i\) have frequencies \(f_i\)?

A \(\dfrac{\sum x_i f_i}{\sum f_i}\) B \(\dfrac{\sum x_i}{\sum f_i}\) C \(\sum x_i f_i\) D \(\dfrac{\sum f_i}{\sum x_i}\)

Select an option to see the answer, or skip this question.

Question 3 of 5

A data set has mean 12. Which pair can be included without changing the mean?

A 10 and 15 B 9 and 15 C 8 and 15 D 12 and 15

Select an option to see the answer, or skip this question.

Question 4 of 5

What is the median of 4, 7, 10 and 15?

A 7 B 10 C 8.5 D 9

Select an option to see the answer, or skip this question.

Question 5 of 5

Study the chapter's temperature graph.

In which month is Punjab's monthly maximum temperature highest?

A April B May C June D July

Select an option to see the answer, or skip this question.

Class 6