Gavin's study compared reading error rates and reading comprehension scores between two groups of 50 third-grade students that received different reading programs. His t test data analysis did not indicate any differences between the two types of instruction. The most likely reason for his findings is that:. a. his measures did not measure reading.
b. his sample is too small.
c. he conducted the wrong analysis.
d. his groups were too similar.

his groups were too similar.

Explanation:

The t-test is used to check whether there a significant difference exist between means of two types of instructions given. T-test is used for hypothesis testing.

In the scenario above, we are informed that Gavin's study compared reading error rates and the reading comprehension scores between two groups of 50 third-grade students but his t-test data analysis did not show any differences between the two types of instruction that were tested.

The ideal reason for the t-test analysis not to show any differences between the instructions is when the groups are too similar. Due to the similarity, the difference between the means found in the sample will not be statistically different.

uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -

yes i would go with c

hope i

-lavira: )