Practice30 Create account

The data 3, 5, 7, $x$ , 9, 5, 7, 3 has 7 as its only mode. What is the mean of the data?

Competition practiceStatistics

A7
B6
C5.5
D5.75

Step-by-Step Solution

Without

x

, 3, 5 and 7 each appear twice. For 7 to be the only mode,

x = 7

. Sum

= 3 + 5 + 7 + 7 + 9 + 5 + 7 + 3 = 46

; mean

= \frac{46}{8} = 5.75

.

Answer: D) 5.75

Master this topic in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Statistics practice questions

More Statistics practice

The histogram shows how long 40 commuters take to reach an office in Gurugram. Using the…Find the median of the distribution: classes 20–30, 30–40, 40–50, 50–60, 60–70 with…In a scholarship test, Reasoning carries weight 3, Maths weight 4 and English weight 3.…The data 2, 4, 4, 5, 7, 7, 7, 9, x has a mean of 6 and its mode is 7. What is x?Six boxes in a godown have a mean weight of 48 kg. One box is swapped for a new box…