Question

The following data show the number of questions different students of a class could answer in a quiz competition:

2, 4, 2, 5, 1, 4, 5, 7, 3, 5, 6, 2, 2, 5, 5, 5, 4, 6


The dot plot below was made to represent the data.

For which number is the data plotted incorrectly?
2      3        4      5

Answer 1

u just need to count how many numbers are in ur data.

There is one 1....so the one dot over the 1 is correct
There are four 2's....so the 4 dots over the 2 is correct
There is one 3....so 1 dot over 3 is correct
There are three 4's...but u only have 2 dots over the 4 when there should be 3....so ur answer is going to be 4 <==

Answer 2

Number 4 plot incorrectly represent on dot plot.

C is correct

Explanation:

The following data show the number of questions different students of a class could answer in a quiz competition:

2, 4, 2, 5, 1, 4, 5, 7, 3, 5, 6, 2, 2, 5, 5, 5, 4, 6

We are given the dot plot of the data set.

Data : 1 2 3 4 5 6 7

Frequency : 1 4 1 3 6 2 1

We need to choose which data number plot incorrectly.

For 2: Number of dot should be 4, In graph also 4, 4=4 (True)

For 3: Number of dot should be 1, In graph also 1, 1=1 (True)

For 4: Number of dot should be 3, In graph also 2, 3≠2 (False)

For 5: Number of dot should be 6, In graph also 6, 6=6 (True)

Hence, number 4 plot incorrectly