Some people took part in a game. The frequency shows information about their scores. Score:Frequency
1-7:19
8-10:14
11-15:15
16-20:20
21-35:10
36-50:13
Estimate the mean.
Give your answer rounded to 2 decimal places.

The mean = 17.54

Step-by-step explanation:

Form a table as below;

Interval         Frequency{f}      Midpoint of frequency{x}          fx    

1-7                    19                         4                                            76

8-10                  14                         9                                            126

11-15                  15                         13                                           195

16-20                20                        18                                           360

21-35                 10                        28                                          280

36-50                13                         43                                          559

Sum                   91                                                                        1596

The mean  of grouped data = Sum of { Interval Midpoint * Frequency } /Sum of frequency

The mean= 1596 / 91

The mean = 17.54

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

wfirfkfr/jjfi; jn; p/ojkfvlbvmkmgkgkkkgkkg

step-by-step explanation: