A stock has the following returns over three consecutive years: -77%, -17%, and 69%. What is the arithmetic average?

A stock has the following returns over three consecutive years: -6%, -27%, and 28%. What is the geometric average?

A stock has the following returns over three consecutive years:  38%, 90%, and -15%. What is the appropriate average?

A stock has the following returns over three consecutive years: -30%, 30%, and -4%. What is the standard deviation of these returns?

Which of the following is true about the Efficient Market Hypothesis, EMH?

There is ample evidence to confirm the strong-form EMH.

The semi-strong form EMH contains the weak-form EMH.

It is well-established (in academic research) that you can generate additional returns using price and volume pattern data.

Inside information is reflected in prices under the semi-strong form EMH.