Question

The dot plot shows the time trials of an experiment. Each number on the dot plot represents the amount of time, in seconds, it took to complete a trial.

How many time trials were recorded during the experiment?

Enter the answer in the box.

Answer 1

There were 18 trials recorded

Explanation:

Each dot is a trial, the numbers under them is how long each that trial took.

Hope this helps.

Answer 2

The number of times trials were recorded during the experiment are:

18

Explanation:

We know that the dot plot is nothing but the representation of outcomes of a experiment where the dots represent the value of each outcome.

and the total number of dots represent the total number of items which are studied or recorded.

Here, the total number of trials that are recorded is equal to the total number of dots in the dot plot i.e. the total frequency of the set.

The data frequency table is as follows:

Value Frequency

15 2

17 3

19 2

20 2

21 1

23 4

24 1

25 3

Total frequency= 2+3+2+2+1+4+1+3=18

Hence, the answer is: 18