Answer:
C. 2
Step-by-step explanation:
Cohen's d is a parameter used to express the standardised difference between two means. It is defined as the difference between the means divided by the pooled standard deviation.
In this case, the difference between both means (M2-M1) is 8. As for the pooled standard deviation, simply take the square root of the given pooled variance:
Therefore, the value of Cohen's d (d) is:
Answer:
Option A) 15.5 is correct
The new median for the new data set is 15.5
Step-by-step explanation:
Given data set is 8,21,17,13
To find the median :
First order the given set of data into least to greatest
The ordered set is 8,13,17,21
Since the given set of data is even
We can take midvalues of data in the set
Median is the mean of two middle values in the data set
Therefore Median=15 ( given )
Given that if 17 is changed to 18 then the given set of data 8,21,17,13 is changed into new set 8,21,18,13
To find the median :
First order the new set of data into least to greatest
The ordered set is 8,13,18,21
Since the given set of data is even
We can take two midvalues of new data in the set
Median is the mean of two middle values in the data set
Therefore New Median=15.5
Therefore option A) 15.5 is correct
The new median for the new data set is 15.5
9514 1404 393
Answer:
D) Rhombus
Step-by-step explanation:
The figure is a parallelogram with equal-length sides, so is a rhombus.
