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

Answer:

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

                                    18

Step-by-step 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                  

Answer 2

Answer:

There were 18 trials recorded

Step-by-step explanation:

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

Hope this helps.